Query: Sigma YAML for windows / file_event
Matching passage: Sigma rule: Detects the dual use tool ADExplorer writing a complete AD snapshot into a .dat file. This can be used by attackers to e. Logsource: windows / file_event. Rule: title: ADExplorer Writing Complete AD Snapshot Into .dat File id: 0a1255c5-d732-4b62-ac02-b5152d34fb83 related: - id: 9212f354-7775-4e28-9c9f-8f0a4544e664 type: similar status: experimental description: Detects the dual use tool ADExplorer writing a complete AD snapshot into a .dat file. 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://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: Arnim Rupp (Nextron Systems), Thomas Patzke date: 2025-07-09 tags: - attack.discovery - attack.t1087.002 - attack.t1069.002 - attack.t1482 logsource: category: file_event product: windows detection: selection: Image|endswith: - \ADExp.exe - \ADExplorer.exe - \ADExplorer64.exe - \ADExplorer64a.exe TargetFilename|endswith: .dat condition: selection falsepositives: - Legitimate use of ADExplorer by administrators creating .dat snapshots level: medium
Near-miss passage: Sigma rule: Detects potentially suspicious keywords that could indicate the use of a PowerShell exploitation framework. Logsource: windows / ps_script. Rule: title: Potential Suspicious PowerShell Keywords id: 1f49f2ab-26bc-48b3-96cc-dcffbc93eadf status: test description: Detects potentially suspicious keywords that could indicate the use of a PowerShell exploitation framework references: - https://posts.specterops.io/entering-a-covenant-net-command-and-control-e11038bcf462 - https://github.com/PowerShellMafia/PowerSploit/blob/d943001a7defb5e0d1657085a77a0e78609be58f/CodeExecution/Invoke-ReflectivePEInjection.ps1 - https://github.com/hlldz/Phant0m/blob/30c2935d8cf4aafda17ee2fab7cd0c4aa9a607c2/old/Invoke-Phant0m.ps1 - https://gist.github.com/MHaggis/0dbe00ad401daa7137c81c99c268cfb7 author: Florian Roth (Nextron Systems), Perez Diego (@darkquassar), Tuan Le (NCSGroup) date: 2019-02-11 modified: 2023-04-21 tags: - attack.execution - attack.t1059.001 logsource: product: windows category: ps_script definition: 'Requirements: Script Block Logging must be enabled' detection: selection: ScriptBlockText|contains: - System.Reflection.Assembly.Load($ - '[System.Reflection.Assembly]::Load($' - '[Reflection.Assembly]::Load($' - System.Reflection.AssemblyName - Reflection.Emit.AssemblyBuilderAccess - Reflection.Emit.CustomAttributeBuilder - Runtime.InteropServices.UnmanagedType - Runtime.InteropServices.DllImportAttribute - SuspendThread - rundll32 condition: selection falsepositives: - Unknown level: medium