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>
112 lines
2.7 KiB
YAML
112 lines
2.7 KiB
YAML
title: Default Credentials Usage
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id: 1a395cbc-a84a-463a-9086-ed8a70e573c7
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status: stable
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description: |
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Before deploying any new asset, change all default passwords to have values consistent with administrative level accounts.
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Sigma detects default credentials usage. Sigma for Qualys vulnerability scanner. Scan type - Vulnerability Management.
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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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- https://community.qualys.com/docs/DOC-6406-reporting-toolbox-focused-search-lists
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author: Alexandr Yampolskyi, SOC Prime
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date: 2019/03/26
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tags:
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- attack.initial_access
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# - CSC4
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# - CSC4.2
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# - NIST CSF 1.1 PR.AC-4
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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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# - ISO 27002-2013 A.9.1.1
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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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# - PCI DSS 3.2 2.1
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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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# - 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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logsource:
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product: qualys
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detection:
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selection:
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host.scan.vuln:
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- 10693
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- 11507
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- 11633
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- 11804
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- 11821
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- 11847
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- 11867
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- 11931
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- 11935
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- 11950
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- 12541
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- 12558
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- 12559
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- 12560
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- 12562
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- 12563
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- 12565
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- 12587
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- 12590
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- 12599
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- 12702
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- 12705
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- 12706
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- 12907
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- 12928
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- 12929
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- 13053
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- 13178
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- 13200
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- 13218
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- 13241
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- 13253
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- 13274
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- 13296
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- 13301
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- 13327
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- 13373
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- 13374
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- 13409
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- 13530
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- 13532
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- 20065
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- 20073
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- 20081
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- 27202
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- 27358
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- 38702
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- 38719
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- 42045
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- 42417
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- 43029
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- 43220
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- 43221
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- 43222
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- 43223
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- 43225
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- 43246
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- 43431
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- 43484
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- 86857
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- 87098
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- 87106
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condition: selection
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falsepositives:
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- Unknown
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level: medium
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