security-tools/sigma-rules
1
0
Fork 0
Code Issues Pull Requests Actions Packages Projects Releases Wiki Activity
998 Commits 1 Branch 0 Tags
3d4eaf4cafcbfa148a1a1bb3b96507dd71a2acce
Commit Graph

740 Commits

Author SHA1 Message Date
Stijn Holzhauer 3d4eaf4caf Adding path as stated in #1812 (#1889) 
* Adding path as stated in #1812

* Bumping updated_date

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-27 08:07:38 -03:00
Jonhnathan 940689576d [New Rule] Account configured with never Expiring Password (#1790) 
* Create persistence_nopasswd_account.toml

* Update persistence_nopasswd_account.toml

* Update persistence_nopasswd_account.toml

* .

* Update persistence_dontexpirepasswd_account.toml

* Update persistence_dontexpirepasswd_account.toml
 2022-03-26 08:19:28 -03:00
Jonhnathan cdb3dd6dbe [Security Content] Add Investigation Guides (#1799) 
* Update impact_backup_file_deletion.toml

* Update credential_access_seenabledelegationprivilege_assigned_to_user.toml

* Update defense_evasion_ms_office_suspicious_regmod.toml

* Update credential_access_posh_request_ticket.toml

* Update credential_access_disable_kerberos_preauth.toml

* Fix missing hyphen

* Update rules/windows/credential_access_posh_request_ticket.toml

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

* Update rules/windows/credential_access_posh_request_ticket.toml

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

* Apply suggestions from code review

Co-authored-by: benironside <91905639+benironside@users.noreply.github.com>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>

* Update credential_access_posh_request_ticket.toml

* Apply suggestions from code review

Co-authored-by: Joe Peeples <joe.peeples@elastic.co>

* Remove extra line

* Apply suggestions from code review

Co-authored-by: nastasha-solomon <79124755+nastasha-solomon@users.noreply.github.com>

* Lint and adjusts

* Apply suggestions from code review

Co-authored-by: Joe Peeples <joe.peeples@elastic.co>

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: benironside <91905639+benironside@users.noreply.github.com>
Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
Co-authored-by: Joe Peeples <joe.peeples@elastic.co>
Co-authored-by: nastasha-solomon <79124755+nastasha-solomon@users.noreply.github.com>
 2022-03-24 18:16:00 -03:00
shashank-elastic 3474f8c8e4 flock shell evasion threat (#1863) 
* flock shell evasion threat

* Update rules/linux/execution_flock_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/execution_flock_binary.toml

* Update rules/linux/execution_flock_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-24 15:52:18 -05:00
shashank-elastic 152477904f vim shell evasion threat (#1865) 
* vim shell evasion threat

* Update rules/linux/execution_vi_binary.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/execution_vi_binary.toml

* Update rules/linux/execution_vi_binary.toml

* Update rules/linux/execution_vi_binary.toml

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2022-03-24 15:37:20 -05:00
Jonhnathan df7bed4408 [New Rule] User account exposed to Kerberoasting (#1789) 
* Create credential_access_spn_attribute_modified.toml

* Update credential_access_spn_attribute_modified.toml

* Update non-ecs-schema.json

* Update rules/windows/credential_access_spn_attribute_modified.toml

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>

Co-authored-by: Mika Ayenson <Mikaayenson@users.noreply.github.com>
 2022-03-23 16:31:47 -03:00
Samirbous c254d0de8b [New Rule] Suspicious Remote Registry Access via SeBackupPrivilege (#1783) 
* [New Rule] Suspicious Remote Registry Access via SeBackupPrivilege

https://github.com/mpgn/BackupOperatorToDA
https://raw.githubusercontent.com/Wh04m1001/Random/main/BackupOperators.cpp

Detection mainly occurs on AD/DC side :
EQL

```
sequence by host.id, winlog.event_data.SubjectLogonId with maxspan=1m
 [iam where event.action == "logged-in-special"  and
  winlog.event_data.PrivilegeList : "SeBackupPrivilege"]
 [any where event.action == "Detailed File Share" and winlog.event_data.RelativeTargetName : "winreg"]
```

```
  "sequences" : [
      {
        "join_keys" : [
          "83989f29-8447-4b3c-a54b-4a0f7e5a4872",
          "0x2a23a5"
        ],
        "events" : [
          {
            "_index" : ".ds-logs-system.security-default-2022.02.11-000001",
            "_id" : "L68HAn8BQQK22TUvoE_k",
            "_source" : {
              "agent" : {
                "name" : "01566s-win16-ir",
                "id" : "0517bf72-e8ae-4f53-bc09-cdf3428aa683",
                "type" : "filebeat",
                "ephemeral_id" : "26383f4e-4412-4aa4-8ed4-7e729fb593e8",
                "version" : "8.0.0"
              },
              "winlog" : {
                "computer_name" : "01566s-win16-ir.threebeesco.com",
                "process" : {
                  "pid" : 624,
                  "thread" : {
                    "id" : 756
                  }
                },
                "keywords" : [
                  "Audit Success"
                ],
                "logon" : {
                  "id" : "0x2a23a5"
                },
                "channel" : "Security",
                "event_data" : {
                  "SubjectUserName" : "samir",
                  "SubjectDomainName" : "3B",
                  "SubjectLogonId" : "0x2a23a5",
                  "PrivilegeList" : [
                    "SeBackupPrivilege",
                    "SeRestorePrivilege"
                  ],
                  "SubjectUserSid" : "S-1-5-21-308926384-506822093-3341789130-220106"
                },
                "opcode" : "Info",
                "record_id" : "2987813",
                "task" : "Special Logon",
                "event_id" : "4672",
                "provider_guid" : "{54849625-5478-4994-A5BA-3E3B0328C30D}",
                "api" : "wineventlog",
                "provider_name" : "Microsoft-Windows-Security-Auditing"
              },
              "log" : {
                "level" : "information"
              },
              "elastic_agent" : {
                "id" : "0517bf72-e8ae-4f53-bc09-cdf3428aa683",
                "version" : "8.0.0",
                "snapshot" : false
              },
              "message" : """Special privileges assigned to new logon.

Subject:
	Security ID:		S-1-5-21-308926384-506822093-3341789130-220106
	Account Name:		samir
	Account Domain:		3B
	Logon ID:		0x2A23A5

Privileges:		SeBackupPrivilege
			SeRestorePrivilege""",
              "input" : {
                "type" : "winlog"
              },
              "@timestamp" : "2022-02-16T10:15:26.330Z",
              "ecs" : {
                "version" : "1.12.0"
              },
              "related" : {
                "user" : [
                  "samir"
                ]
              },
              "data_stream" : {
                "namespace" : "default",
                "type" : "logs",
                "dataset" : "system.security"
              },
              "host" : {
                "hostname" : "01566s-win16-ir",
                "os" : {
                  "build" : "14393.3659",
                  "kernel" : "10.0.14393.3659 (rs1_release_1.200410-1813)",
                  "name" : "Windows Server 2016 Datacenter",
                  "type" : "windows",
                  "family" : "windows",
                  "version" : "10.0",
                  "platform" : "windows"
                },
                "ip" : [
                  "172.16.66.36",
                  "fe80::ffff:ffff:fffe",
                  "fe80::5efe:ac10:4224"
                ],
                "name" : "01566s-win16-ir.threebeesco.com",
                "id" : "83989f29-8447-4b3c-a54b-4a0f7e5a4872",
                "mac" : [
                  "00:50:56:24:6c:d2",
                  "00:00:00:00:00:00:00:e0",
                  "00:00:00:00:00:00:00:e0"
                ],
                "architecture" : "x86_64"
              },
              "event" : {
                "agent_id_status" : "verified",
                "ingested" : "2022-02-16T10:15:28Z",
                "code" : "4672",
                "provider" : "Microsoft-Windows-Security-Auditing",
                "created" : "2022-02-16T10:15:27.675Z",
                "kind" : "event",
                "action" : "logged-in-special",
                "category" : [
                  "iam"
                ],
                "type" : [
                  "admin"
                ],
                "dataset" : "system.security",
                "outcome" : "success"
              },
              "user" : {
                "domain" : "3B",
                "name" : "samir",
                "id" : "S-1-5-21-308926384-506822093-3341789130-220106"
              }
            }
          },
          {
            "_index" : ".ds-logs-system.security-default-2022.02.11-000001",
            "_id" : "Mq8HAn8BQQK22TUvoE_k",
            "_source" : {
              "agent" : {
                "name" : "01566s-win16-ir",
                "id" : "0517bf72-e8ae-4f53-bc09-cdf3428aa683",
                "ephemeral_id" : "26383f4e-4412-4aa4-8ed4-7e729fb593e8",
                "type" : "filebeat",
                "version" : "8.0.0"
              },
              "winlog" : {
                "computer_name" : "01566s-win16-ir.threebeesco.com",
                "process" : {
                  "pid" : 4,
                  "thread" : {
                    "id" : 1176
                  }
                },
                "keywords" : [
                  "Audit Success"
                ],
                "logon" : {
                  "id" : "0x2a23a5"
                },
                "channel" : "Security",
                "event_data" : {
                  "ShareName" : """\\*\IPC$""",
                  "IpPort" : "50071",
                  "SubjectLogonId" : "0x2a23a5",
                  "AccessMask" : "0x12019f",
                  "ObjectType" : "File",
                  "SubjectUserName" : "samir",
                  "AccessReason" : "-",
                  "SubjectDomainName" : "3B",
                  "IpAddress" : "172.16.66.25",
                  "AccessMaskDescription" : [
                    "List Object",
                    "Read Property",
                    "Create Child",
                    "Control Access",
                    "Delete Child",
                    "List Contents",
                    "SELF",
                    "SYNCHRONIZE",
                    "READ_CONTROL"
                  ],
                  "RelativeTargetName" : "winreg",
                  "AccessList" : """%%1538
				%%1541
				%%4416
				%%4417
				%%4418
				%%4419
				%%4420
				%%4423
				%%4424
				""",
                  "SubjectUserSid" : "S-1-5-21-308926384-506822093-3341789130-220106"
                },
                "opcode" : "Info",
                "record_id" : "2987816",
                "event_id" : "5145",
                "task" : "Detailed File Share",
                "provider_guid" : "{54849625-5478-4994-A5BA-3E3B0328C30D}",
                "api" : "wineventlog",
                "provider_name" : "Microsoft-Windows-Security-Auditing"
              },
              "log" : {
                "level" : "information"
              },
              "elastic_agent" : {
                "id" : "0517bf72-e8ae-4f53-bc09-cdf3428aa683",
                "version" : "8.0.0",
                "snapshot" : false
              },
              "message" : """A network share object was checked to see whether client can be granted desired access.

Subject:
	Security ID:		S-1-5-21-308926384-506822093-3341789130-220106
	Account Name:		samir
	Account Domain:		3B
	Logon ID:		0x2A23A5

Network Information:
	Object Type:		File
	Source Address:		172.16.66.25
	Source Port:		50071

Share Information:
	Share Name:		\\*\IPC$
	Share Path:
	Relative Target Name:	winreg

Access Request Information:
	Access Mask:		0x12019F
	Accesses:		READ_CONTROL
				SYNCHRONIZE
				ReadData (or ListDirectory)
				WriteData (or AddFile)
				AppendData (or AddSubdirectory or CreatePipeInstance)
				ReadEA
				WriteEA
				ReadAttributes
				WriteAttributes

Access Check Results:
	-""",
              "input" : {
                "type" : "winlog"
              },
              "@timestamp" : "2022-02-16T10:15:26.336Z",
              "ecs" : {
                "version" : "1.12.0"
              },
              "data_stream" : {
                "namespace" : "default",
                "type" : "logs",
                "dataset" : "system.security"
              },
              "host" : {
                "hostname" : "01566s-win16-ir",
                "os" : {
                  "build" : "14393.3659",
                  "kernel" : "10.0.14393.3659 (rs1_release_1.200410-1813)",
                  "name" : "Windows Server 2016 Datacenter",
                  "family" : "windows",
                  "type" : "windows",
                  "version" : "10.0",
                  "platform" : "windows"
                },
                "ip" : [
                  "172.16.66.36",
                  "fe80::ffff:ffff:fffe",
                  "fe80::5efe:ac10:4224"
                ],
                "name" : "01566s-win16-ir.threebeesco.com",
                "id" : "83989f29-8447-4b3c-a54b-4a0f7e5a4872",
                "mac" : [
                  "00:50:56:24:6c:d2",
                  "00:00:00:00:00:00:00:e0",
                  "00:00:00:00:00:00:00:e0"
                ],
                "architecture" : "x86_64"
              },
              "event" : {
                "agent_id_status" : "verified",
                "ingested" : "2022-02-16T10:15:28Z",
                "code" : "5145",
                "provider" : "Microsoft-Windows-Security-Auditing",
                "kind" : "event",
                "created" : "2022-02-16T10:15:27.675Z",
                "action" : "Detailed File Share",
                "dataset" : "system.security",
                "outcome" : "success"
              }
            }
          }
        ]
      },
```

* Update non-ecs-schema.json

* Update rules/windows/credential_access_suspicious_winreg_access_via_sebackup_priv.toml

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
 2022-03-23 19:42:03 +01:00
Justin Ibarra 46c2383e5b [New Rule] Okta User Session Impersonation (#1867) 
* [New Rule] Okta User Session Impersonation
Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
 2022-03-22 16:11:29 -08:00
Stijn Holzhauer 2ed97d2e8c [Rule Tuning] Adding event.provider to AWS WAF Rule or Rule Group Deletion (#1833) 
* Adding event.provider

* Removing new line

* Updating updated_date field

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
 2022-03-22 20:36:53 -03:00
shashank-elastic 22367d3702 crash shell evasion threat (#1861) 2022-03-22 18:46:05 +05:30
shashank-elastic 2ab5a1f44a [New Rule] cpulimit shell evasion threat (#1851) 
* cpulimit shell evasion threat

* Update rules/linux/execution_cpulimit_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/execution_cpulimit_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-21 12:16:53 -05:00
Terrance DeJesus 096723b2a1 [Rule Tuning] Symbolic Link to Shadow Copy Created (#1830) 
* fixed duplicated file name

* deprecated Symbolic Link to Shadow Copy Created as it may be prone to FP and the intrusion steps are covered with NTDS or SAM Database File Copied

* moved rule back to production, added investigation notes and sequencing to EQL query

* added related rule 3bc6deaa-fbd4-433a-ae21-3e892f95624f to investigation notes

* updating with minor changes

* adjusted related rules

* adjusted investigation notes

* Update rules/windows/credential_access_symbolic_link_to_shadow_copy_created.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/windows/credential_access_symbolic_link_to_shadow_copy_created.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/windows/credential_access_symbolic_link_to_shadow_copy_created.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* TOML linted and adjusted updated date

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2022-03-18 11:08:29 -04:00
shashank-elastic 7feebc2c10 Updation of Mitre Tactic and Threats (#1850) 
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-18 15:06:24 +05:30
Jonhnathan 22dd7f0ada Deprecate PrintNightmare Rules (#1852) 2022-03-17 19:39:36 -03:00
Jonhnathan a6edb7cfcf Update defense_evasion_posh_process_injection.toml (#1838) 
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-17 19:37:42 -03:00
shashank-elastic b492258fb0 [New Rule] busybox shell evasion threat (#1842) 
* busybox shell evasion threat

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-17 09:54:46 +05:30
shashank-elastic f7735df1d5 [New Rule] c89/c99 shell evasion threat (#1840) 
* c88/c99 shell evasion threat
 2022-03-16 23:06:34 +05:30
Jonhnathan e0f8f61ca0 Update persistence_user_account_added_to_privileged_group_ad.toml (#1845) 2022-03-16 13:06:04 -03:00
Jonhnathan b5f06f455c Update defense_evasion_microsoft_defender_tampering.toml (#1837) 2022-03-14 20:07:39 -03:00
Jonhnathan 53fbc50ea1 [New Rule] AdminSDHolder SDProp Exclusion Added (#1795) 
* AdminSDHolder SDProp Exclusion Added Initial Rule

* Update persistence_sdprop_exclusion_dsheuristics.toml

* Update rules/windows/persistence_sdprop_exclusion_dsheuristics.toml

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2022-03-10 14:17:01 -03:00
shashank-elastic c05f3c8aa3 gcc shell evasion threat (#1824) 2022-03-10 22:41:31 +05:30
shashank-elastic b49cce9fcb ssh shell evasion threat (#1827) 2022-03-10 22:39:05 +05:30
shashank-elastic ddbc1de45c mysql shell evasion threat (#1823) 2022-03-10 22:36:35 +05:30
shashank-elastic 334aa12aaf expect shell evasion threat (#1817) 
* expect shell evasion threat

* expect shell evasion threat

* Update rules/linux/defense_evasion_expect_binary.toml

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-07 14:22:56 -06:00
shashank-elastic 2b6a357a4b nice shell evasion threat (#1820) 
* nice shell evasion threat

* Update rules/linux/defense_evasion_nice_binary.toml

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-07 13:59:16 -06:00
shashank-elastic f9503f2096 [Rule Tuning] Rule description updates (#1811) 
Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
 2022-03-07 19:33:11 +05:30
shashank-elastic 2a82f18e43 [New Rule] Linux Restricted Shell Breakout via the Vi command (#1809) 
* new:rule:issue-1808 vi shell evasion threat

* Update rules/linux/defense_evasion_vi_binary.toml

* Update rules/linux/defense_evasion_vi_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* new:rule:issue-1808 vi shell evasion threat

* new:rule:issue-1808 vi shell evasion threat

* new:rule:issue-1808 vi shell evasion threat

* Update rules/linux/defense_evasion_vi_binary.toml

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-04 13:46:19 -06:00
Samirbous a6582351b5 [New Rule] Potential Remote Credential Access via Registry (#1804) 
* [New Rule] Potential Remote Credential Access via Registry

4624 logon followed by hive file creation by regsvc svchost.exe by same user.name and host.id. This matches on secretdsdump and other similar implementations. require to correlation Elastic endpoint file events with System integration logs (4624).

Example of data :

* Delete workspace.xml

* Update credential_access_remote_sam_secretsdump.toml

* Update credential_access_remote_sam_secretsdump.toml

* add non ecs field

* Update non-ecs-schema.json

* Update credential_access_remote_sam_secretsdump.toml

* Update rules/windows/credential_access_remote_sam_secretsdump.toml

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>

* Update rules/windows/credential_access_remote_sam_secretsdump.toml

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>

* Update rules/windows/credential_access_remote_sam_secretsdump.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-03 16:28:03 +01:00
Terrance DeJesus 202b9c7479 [New Rule] Execution control.exe via WorkFolders.exe (#1806) 
* added detection rule defense_evasion_workfolders_control_execution.toml related to issue #1586

* updated rule authors

* added references to the rule

* added timestamp override variable to the rule

* adjusted value of timestamp override from event_ingested to event.ingested

* Update rules/windows/defense_evasion_workfolders_control_execution.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/windows/defense_evasion_workfolders_control_execution.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/windows/defense_evasion_workfolders_control_execution.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/windows/defense_evasion_workfolders_control_execution.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/windows/defense_evasion_workfolders_control_execution.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/windows/defense_evasion_workfolders_control_execution.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* linted toml file as suggested

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-03 09:21:40 -05:00
Jonhnathan 5c477849fe [Rule Tuning] Update PowerShell script_block queries to avoid partial matches (#1807) 
* Update script_block queries

* Update execution_posh_psreflect.toml
 2022-03-03 07:37:25 -03:00
shashank-elastic 283cbca702 find shell evasion threat(#1801) 
* new:rule:issue-1800 Adding new rule for find shell evasion

* new:rule:issue-1800 Adding new rule for find shell evasion

* new:rule:issue-1800 Adding new rule for find shell evasion

* Update rules/linux/privilege_escalation_find_binary.toml

* Update rules/linux/privilege_escalation_find_binary.toml

* new:rule:issue-1800 Adding Mittre Attack Techniques

* Update rules/linux/privilege_escalation_find_binary.toml

* Update rules/linux/privilege_escalation_find_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_find_binary.toml

* Update rules/linux/privilege_escalation_find_binary.toml

* Update rules/linux/privilege_escalation_find_binary.toml

* Update rules/linux/privilege_escalation_find_binary.toml

* new:rule:issue-1800 Review Comments

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-02 22:00:29 +05:30
shashank-elastic c9dd047966 apt binary shell evasion threat (#1792) 
* new:rule:issue-1782 Adding a new Rule for apt binary shell evasion threat

* new:rule:issue-1782 Review Comments

* Update rules/linux/apt_binary_shell_evasion.toml

* new:rule:issue-1782 Adding Mittre Attack Techniques

* new:rule:issue-1782 Adding Mittre Attack Techniques

* new:rule:issue-1782 Adding Mittre Attack Techniques

* new:rule:issue-1782 Adding Mittre Attack Techniques

* new:rule:issue-1782 Adding Mittre Attack Techniques

* Update rules/linux/privilege_escalation_apt_binary.toml

* Update rules/linux/privilege_escalation_apt_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_apt_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_apt_binary.toml

* Update rules/linux/privilege_escalation_apt_binary.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/privilege_escalation_apt_binary.toml

* Update rules/linux/privilege_escalation_apt_binary.toml

* Update rules/linux/privilege_escalation_apt_binary.toml

* Update rules/linux/privilege_escalation_apt_binary.toml

* Update rules/linux/privilege_escalation_apt_binary.toml

* new:rule:issue-1782 Review Comments

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2022-03-02 21:57:40 +05:30
shashank-elastic e004a2f4a5 awk binary shell evasion threat (#1794) 
* new:rule:issue-1785 Adding a new Rule for awk binary shell evasion threat

* Update rules/linux/awk_binary_shell_evasion.toml

* Update rules/linux/awk_binary_shell_evasion.toml

* new:rule:issue-1785 Adding Mittre Attack Techniques

* new:rule:issue-1785 Adding Mittre Attack Techniques

* new:rule:issue-1785 Adding Mittre Attack Techniques

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

* Update rules/linux/privilege_escalation_awk_binary_shell.toml

* new:rule:issue-1785 Review Comments

* new:rule:issue-1785 Review Comments

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
 2022-03-02 21:53:49 +05:30
shashank-elastic 758784d4d5 env binary shell evasion threat (#1793) 
* new:rule:issue-1786 Adding a new Rule for env binary shell evasion threat

* new:rule:issue-1786 Adding a new Rule for env binary shell evasion threat

* Update rules/linux/env_binary_shell_evasion.toml

* Update rules/linux/env_binary_shell_evasion.toml

* new:rule:issue-1786 Adding Mittre Attack Techniques

* new:rule:issue-1786 Adding Mittre Attack Techniques

* new:rule:issue-1786 Adding Mittre Attack Techniques

* new:rule:issue-1786 Adding Mittre Attack Techniques

* new:rule:issue-1786 Adding Mittre Attack Techniques

* Update rules/linux/privilege_escalation_env_binary.toml

Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>

* Update rules/linux/privilege_escalation_env_binary.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

* Update rules/linux/privilege_escalation_env_binary.toml

* Update rules/linux/privilege_escalation_env_binary.toml

* new:rule:issue-1786 Review Comments

* Update rules/linux/defense_evasion_env_binary.toml

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Samirbous <64742097+Samirbous@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-02 21:47:01 +05:30
Samirbous f48144c6b3 [New Rule] Registry Hive File Creation via SMB (#1779) 
* [New Rule] Registry Hive File Creation via SMB

Identifies the creation or modification of a medium size registry hive file via the SMB protocol :

* Update credential_access_moving_registry_hive_via_smb.toml

* Update etc/non-ecs-schema.json

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>

Co-authored-by: Colson Wilhoit <48036388+DefSecSentinel@users.noreply.github.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-03-02 10:12:17 +01:00
Jonhnathan 8a9b52f7e1 Update impact_azure_service_principal_credentials_added.toml (#1802) 2022-03-02 05:36:21 -03:00
Jonhnathan 1c50f35aed [Security Content] Update rules based on docs review (#1803) 
* Adds suggestions from security-docs

* Update rules/windows/lateral_movement_powershell_remoting_target.toml

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>

Co-authored-by: Terrance DeJesus <99630311+terrancedejesus@users.noreply.github.com>
 2022-03-01 21:39:30 -03:00
Mika Ayenson aa7d79cc53 [New Rule] LSASS Memory Dump (#1784) 
* Add new event_data fields (ObjectName, ProcessName)

* Add detection for LSASS Memory Dump Handle Access

* Reference an example of 120089 AccessMask presence

* modify query to increase performance and update the description to remove ("This rule").

* expand path to Elastic Agent ensure syntax consistency

* Optimize rule based on AccessMaskDescription and additional False Positives.

* add AccessMaskDescription keyword and rule tune to make sure AccessMask is used

* filter dllhost.exe and or the condition between AccessMask and AccessMaskDescription

* cleanup
 2022-02-24 08:14:01 -05:00
Jonhnathan 8664ef59f4 Update persistence_azure_conditional_access_policy_modified.toml (#1788) 2022-02-22 15:26:28 -03:00
Jonhnathan dec4243db0 [Rule Tuning] Update rules based on docs review (#1778) 
* Update rules based on docs review

* trivial change to trigger CLA

* undo changes from triggering build

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-02-16 07:42:06 -09:00
Jonhnathan 3227d65cd8 [Rule Tuning] Remove Windows Integration & Winlogbeat Support - User.id (#1773) 
* Remove Windows Integration & Winlogbeat Support

* Update lateral_movement_service_control_spawned_script_int.toml

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-02-15 23:04:55 -03:00
Jonhnathan 03f60cc11c [Rule Tuning] Potential Command and Control via Internet Explorer (#1771) 
* Use user.name on the sequence instead of user.id

* Update command_and_control_iexplore_via_com.toml

* Remove min_stack and comment "with runs"

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-02-15 22:58:01 -03:00
Jonhnathan 42436d3364 [New Rule] Potential Credential Access via DCSync (#1763) 
* "Potential Credential Access via DCSync" Initial Rule

* replace unintentional bracket removal

* json

Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-02-15 21:40:26 -03:00
Jonhnathan fd678dc5cb Modified to use Integrity fields instead of user.id (#1772) 2022-02-15 15:22:49 -09:00
Jonhnathan 9bbe26fec0 [Rule Tuning] Sysmon Registry-based Rules Review & Fixes (#1775) 
* Initial Review of Sysmon Registry Rules

* Update defense_evasion_sip_provider_mod.toml
 2022-02-15 09:56:37 -03:00
Jonhnathan c646a18efb Update discovery_net_command_system_account.toml (#1769) 2022-02-14 12:11:12 -03:00
Samirbous 326aa64ff6 [New Rule] Windows Service Installed via an Unusual Client (#1759) 
* [New Rule] Windows Service Installed via an Unusual Client

https://www.x86matthew.com/view_post?id=create_svc_rpc

* Update non-ecs-schema.json

* Update rules/windows/privilege_escalation_windows_service_via_unusual_client.toml

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>

* Update rules/windows/privilege_escalation_windows_service_via_unusual_client.toml

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>

* Add ```s

* Update privilege_escalation_windows_service_via_unusual_client.toml

* add missing comma to schema

Co-authored-by: Jonhnathan <jonhnathancesar@gmail.com>
Co-authored-by: Justin Ibarra <brokensound77@users.noreply.github.com>
 2022-02-11 21:56:59 +01:00
Jonhnathan 9c56b00429 Modification of AmsiEnable Registry Key - Sysmon support (#1760) 2022-02-11 17:49:38 -03:00
Jonhnathan aa9fedd18d Update impact_volume_shadow_copy_deletion_or_resized_via_vssadmin.toml (#1757) 2022-02-11 08:15:49 -09:00
Khristinin Nikita b1121da237 [Rule Tuning] Fix IM query (#1767) 
* Fix IM quer

* Add update date
 2022-02-10 09:30:13 -09:00