Samirbous
cfa5bafb79
* [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>
(cherry picked from commit c254d0de8b)
rules/
Rules within this folder are organized by solution or platform. The structure is flattened out, because nested file hierarchies are hard to navigate and find what you're looking for. Each directory contains several .toml files, and the primary ATT&CK tactic is included in the file name when it's relevant (i.e. windows/execution_via_compiled_html_file.toml)
| folder | description |
|---|---|
. |
Root directory where rules are stored |
apm/ |
Rules that use Application Performance Monitoring (APM) data sources |
cross-platform/ |
Rules that apply to multiple platforms, such as Windows and Linux |
integrations/ |
Rules organized by Fleet integration |
linux/ |
Rules for Linux or other Unix based operating systems |
macos/ |
Rules for macOS |
ml/ |
Rules that use machine learning jobs (ML) |
network/ |
Rules that use network data sources |
promotions/ |
Rules that promote external alerts into detection engine alerts |
windows/ |
Rules for the Microsoft Windows Operating System |
Integration specific rules are stored in the integrations/ directory:
| folder | integration |
|---|---|
aws/ |
Amazon Web Services (AWS) |
azure/ |
Microsoft Azure |
cyberarkpas/ |
Cyber Ark Privileged Access Security |
endpoint/ |
Elastic Endpoint Security |
gcp/ |
Google Cloud Platform (GCP) |
google_workspace/ |
Google Workspace (formerly GSuite) |
o365/ |
Microsoft Office |
okta/ |
Oka |