Query: detection rule: Detects BitLocker Access Agent Update Utility (baaupdate.exe) loading DLLs from suspicious locations that are publicly w
Matching passage: Sigma rule: Detects BitLocker Access Agent Update Utility (baaupdate.exe) loading DLLs from suspicious locations that are publicly w. Logsource: windows / image_load. Rule: title: BaaUpdate.exe Suspicious DLL Load id: 6e8fe0a8-ba0b-4a93-8f9e-82657e7a5984 related: - id: 9f38c1db-e2ae-40bf-81d0-5b68f73fb512 type: similar status: experimental description: 'Detects BitLocker Access Agent Update Utility (baaupdate.exe) loading DLLs from suspicious locations that are publicly writable which could indicate an attempt to lateral movement via BitLocker DCOM & COM Hijacking. This technique abuses COM Classes configured as INTERACTIVE USER to spawn processes in the context of the logged-on user''s session. Specifically, it targets the BDEUILauncher Class (CLSID ab93b6f1-be76-4185-a488-a9001b105b94) which can launch BaaUpdate.exe, which is vulnerable to COM Hijacking when started with input parameters. This allows attackers to execute code in the user''s context without needing to steal credentials or use additional techniques to compromise the account. ' references: - https://github.com/rtecCyberSec/BitlockMove author: Swachchhanda Shrawan Poudel (Nextron Systems) date: 2025-10-18 tags: - attack.stealth - attack.t1218 - attack.lateral-movement - attack.t1021.003 logsource: category: image_load product: windows detection: selection: Image|endswith: \BaaUpdate.exe ImageLoaded|endswith: .dll ImageLoaded|contains: - :\Perflogs\ - :\Users\Default\ - :\Users\Public\ - :\Windows\Temp\ - \AppData\Local\Temp\ - \AppData\Roaming\ - \Contacts\ - \Favorites\ - \Favourites\ - \Links\ - \Music\ - \Pictures\ - \ProgramData\ - \Temporary Internet - \Videos\ condition: selection falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat a. Logsource: windows / ps_script. Rule: title: AADInternals PowerShell Cmdlets Execution - PsScript id: 91e69562-2426-42ce-a647-711b8152ced6 related: - id: c86500e9-a645-4680-98d7-f882c70c1ea3 type: similar status: test description: Detects ADDInternals Cmdlet execution. A tool for administering Azure AD and Office 365. Which can be abused by threat actors to attack Azure AD or Office 365. references: - https://o365blog.com/aadinternals/ - https://github.com/Gerenios/AADInternals author: Austin Songer (@austinsonger), Nasreddine Bencherchali (Nextron Systems), Swachchhanda Shrawan Poudel (Nextron Systems) date: 2022-12-23 modified: 2025-02-06 tags: - attack.execution - attack.reconnaissance - attack.discovery - attack.credential-access - attack.impact logsource: product: windows category: ps_script definition: Script Block Logging must be enable detection: selection: ScriptBlockText|contains: - Add-AADInt - ConvertTo-AADInt - Disable-AADInt - Enable-AADInt - Export-AADInt - Find-AADInt - Get-AADInt - Grant-AADInt - Initialize-AADInt - Install-AADInt - Invoke-AADInt - Join-AADInt - New-AADInt - Open-AADInt - Read-AADInt - Register-AADInt - Remove-AADInt - Reset-AADInt - Resolve-AADInt - Restore-AADInt - Save-AADInt - Search-AADInt - Send-AADInt - Set-AADInt - Start-AADInt - Unprotect-AADInt - Update-AADInt condition: selection falsepositives: - Legitimate use of the library for administrative activity level: high