Query: Sigma rule for Detects calls to "Add-Content" cmdlet in order to modify the content of the user profile and potentially adding suspicio
Matching passage: Sigma rule: Detects calls to "Add-Content" cmdlet in order to modify the content of the user profile and potentially adding suspicio. Logsource: windows / ps_script. Rule: title: Potential Persistence Via PowerShell User Profile Using Add-Content id: 05b3e303-faf0-4f4a-9b30-46cc13e69152 status: test description: Detects calls to "Add-Content" cmdlet in order to modify the content of the user profile and potentially adding suspicious commands for persistence references: - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1546.013/T1546.013.md author: frack113, Nasreddine Bencherchali (Nextron Systems) date: 2021-08-18 modified: 2023-05-04 tags: - attack.persistence - attack.privilege-escalation - attack.t1546.013 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection_add: ScriptBlockText|contains: Add-Content $profile selection_options: ScriptBlockText|contains: - '-Value "IEX ' - -Value "Invoke-Expression - -Value "Invoke-WebRequest - -Value "Start-Process - '-Value ''IEX ' - -Value 'Invoke-Expression - -Value 'Invoke-WebRequest - -Value 'Start-Process condition: all of selection_* falsepositives: - Legitimate administration and tuning scripts that aim to add functionality to a user PowerShell session level: medium
Near-miss passage: Sigma rule: Detects the execution of Sysinternals ADExplorer with the "-snapshot" flag in order to save a local copy of the active d. Logsource: windows / process_creation. Rule: title: Suspicious Active Directory Database Snapshot Via ADExplorer id: ef61af62-bc74-4f58-b49b-626448227652 related: - id: 9212f354-7775-4e28-9c9f-8f0a4544e664 type: derived status: test description: Detects the execution of Sysinternals ADExplorer with the "-snapshot" flag in order to save a local copy of the active directory database to a suspicious directory. This can be used by attackers to extract data for Bloodhound, usernames for password spraying or use the meta data for social engineering. The snapshot doesn't contain password hashes but there have been cases, where administrators put passwords in the comment field. references: - https://www.documentcloud.org/documents/5743766-Global-Threat-Report-2019.html - https://learn.microsoft.com/de-de/sysinternals/downloads/adexplorer - https://github.com/c3c/ADExplorerSnapshot.py/tree/f700904defac330802bbfedd1d8ffd9248f4ee24 - https://www.packetlabs.net/posts/scattered-spider-is-a-young-ransomware-gang-exploiting-large-corporations/ - https://www.nccgroup.com/us/research-blog/lapsus-recent-techniques-tactics-and-procedures/ - https://trustedsec.com/blog/adexplorer-on-engagements author: Nasreddine Bencherchali (Nextron Systems) date: 2023-03-14 modified: 2025-07-09 tags: - attack.discovery - attack.t1087.002 - attack.t1069.002 - attack.t1482 logsource: category: process_creation product: windows detection: selection_img: - Image|endswith: - \ADExp.exe - \ADExplorer.exe - \ADExplorer64.exe - \ADExplorer64a.exe - OriginalFileName: AdExp - Description: Active Directory Editor - Product: Sysinternals ADExplorer selection_flag: CommandLine|contains: snapshot selection_paths: CommandLine|contains: - \Downloads\ - \Users\Public\ - \AppData\ - \Windows\Temp\ condition: all of selection_* falsepositives: - Unknown level: high