Nasreddine Bencherchali
be359ef3f2
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fix: Kerberos Manipulation - Update field to use Status instead of incorrect "FailureCode" fix: Metasploit SMB Authentication - Remove unnecessary field fix: Service Installation in Suspicious Folder - Update FP filter update: Malicious PowerShell Commandlets - ProcessCreation - "Start-Dnscat2" remove: Dnscat Execution - Deprecated in favour of an integration in the "Malicious PowerShell Cmdlet" type of rules remove: SAM Dump to AppData update: Critical Hive In Suspicious Location Access Bits Cleared - Enhance metadata and logic update: Malicious PowerShell Commandlets - PoshModule - "Start-Dnscat2" update: Malicious PowerShell Commandlets - ScriptBlock - "Start-Dnscat2" update: Malicious PowerShell Scripts - FileCreation - Add "dnscat2.ps1" update: Malicious PowerShell Scripts - PoshModule - Add "dnscat2.ps1" update: Monitoring For Persistence Via BITS - Use "Image" and "OriginalFileName" fields instead of CLI only update: New or Renamed User Account with '$' Character - Reduced level to "medium" update: New Process Created Via Taskmgr.EXE - Added full paths to the filtered binaries to decrease false negatives update: Potential Dropper Script Execution Via WScript/CScript - Re-wrote the logic by removing the paths "C:\Users" and "C:\ProgramData". As these are very common and will generate high FP rate. Instead switched the paths to a more robust list and extended the list of extension covered. Also reduced the level to "medium" update: Potential Fake Instance Of Hxtsr.EXE Executed - Remove "C:" prefix from detection logic update: Prefetch File Deleted - Update selection to remove 'C:' prefix update: Sensitive File Access Via Volume Shadow Copy Backup - Made the rule more generic by updating the title and removing the IOC from conti. (will be added in a dedicated rule) update: Shell Process Spawned by Java.EXE - Add "bash.exe" update: Suspicious PowerShell Download - Powershell Script - Add "DownloadFileAsync" and "DownloadStringAsync" functions update: Suspicious Processes Spawned by Java.EXE - Remove "bash.exe" as its doesn't fit the logic update: Sysmon Application Crashed - Add 32bit version of sysmon binary update: Tap Driver Installation - Security - Reduce level to "low" update: Write Protect For Storage Disabled - Remove "storagedevicepolicies" as the string "storage" already covers it --------- Co-authored-by: phantinuss <79651203+phantinuss@users.noreply.github.com>
90 lines
2.5 KiB
YAML
90 lines
2.5 KiB
YAML
title: Cleartext Protocol Usage
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id: d7fb8f0e-bd5f-45c2-b467-19571c490d7e
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status: stable
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description: |
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Ensure that all account usernames and authentication credentials are transmitted across networks using encrypted channels.
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Ensure that an encryption is used for all sensitive information in transit. Ensure that an encrypted channels is used for all administrative account access.
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references:
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- https://www.cisecurity.org/controls/cis-controls-list/
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- https://www.pcisecuritystandards.org/documents/PCI_DSS_v3-2-1.pdf
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- https://nvlpubs.nist.gov/nistpubs/CSWP/NIST.CSWP.04162018.pdf
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author: Alexandr Yampolskyi, SOC Prime, Tim Shelton
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date: 2019/03/26
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modified: 2022/10/10
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tags:
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- attack.credential_access
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# - CSC4
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# - CSC4.5
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# - CSC14
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# - CSC14.4
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# - CSC16
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# - CSC16.5
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# - NIST CSF 1.1 PR.AT-2
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# - NIST CSF 1.1 PR.MA-2
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# - NIST CSF 1.1 PR.PT-3
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# - NIST CSF 1.1 PR.AC-1
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# - NIST CSF 1.1 PR.AC-4
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# - NIST CSF 1.1 PR.AC-5
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# - NIST CSF 1.1 PR.AC-6
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# - NIST CSF 1.1 PR.AC-7
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# - NIST CSF 1.1 PR.DS-1
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# - NIST CSF 1.1 PR.DS-2
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# - ISO 27002-2013 A.9.2.1
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# - ISO 27002-2013 A.9.2.2
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# - ISO 27002-2013 A.9.2.3
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# - ISO 27002-2013 A.9.2.4
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# - ISO 27002-2013 A.9.2.5
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# - ISO 27002-2013 A.9.2.6
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# - ISO 27002-2013 A.9.3.1
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# - ISO 27002-2013 A.9.4.1
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# - ISO 27002-2013 A.9.4.2
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# - ISO 27002-2013 A.9.4.3
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# - ISO 27002-2013 A.9.4.4
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# - ISO 27002-2013 A.8.3.1
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# - ISO 27002-2013 A.9.1.1
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# - ISO 27002-2013 A.10.1.1
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# - PCI DSS 3.2 2.1
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# - PCI DSS 3.2 8.1
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# - PCI DSS 3.2 8.2
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# - PCI DSS 3.2 8.3
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# - PCI DSS 3.2 8.7
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# - PCI DSS 3.2 8.8
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# - PCI DSS 3.2 1.3
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# - PCI DSS 3.2 1.4
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# - PCI DSS 3.2 4.3
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# - PCI DSS 3.2 7.1
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# - PCI DSS 3.2 7.2
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# - PCI DSS 3.2 7.3
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logsource:
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category: firewall
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detection:
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selection:
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dst_port:
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- 8080
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- 21
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- 80
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- 23
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- 50000
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- 1521
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- 27017
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- 3306
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- 1433
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- 11211
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- 15672
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- 5900
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- 5901
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- 5902
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- 5903
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- 5904
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selection_allow1:
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action:
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- forward
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- accept
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- 2
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selection_allow2:
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blocked: "false" # not all fws set action value, but are set to mark as blocked or allowed or not
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condition: selection and 1 of selection_allow*
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falsepositives:
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- Unknown
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level: low
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