Query: detect Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin at in logs
Matching passage: Sigma rule: Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin at. Logsource: windows / process_creation. Rule: title: Suspicious Usage Of ShellExec_RunDLL id: d87bd452-6da1-456e-8155-7dc988157b7d related: - id: 36c5146c-d127-4f85-8e21-01bf62355d5a type: obsolete - id: 8823e85d-31d8-473e-b7f4-92da070f0fc6 type: similar status: test description: Detects suspicious usage of the ShellExec_RunDLL function to launch other commands as seen in the the raspberry-robin attack references: - https://redcanary.com/blog/raspberry-robin/ - https://www.microsoft.com/en-us/security/blog/2022/10/27/raspberry-robin-worm-part-of-larger-ecosystem-facilitating-pre-ransomware-activity/ - https://github.com/SigmaHQ/sigma/issues/1009 author: Nasreddine Bencherchali (Nextron Systems) date: 2022-09-01 modified: 2022-12-30 tags: - attack.stealth logsource: category: process_creation product: windows detection: selection_openasrundll: CommandLine|contains: ShellExec_RunDLL selection_suspcli: CommandLine|contains: - \Desktop\ - \Temp\ - \Users\Public\ - comspec - iex - Invoke- - msiexec - odbcconf - regsvr32 condition: all of selection_* falsepositives: - Unknown level: high
Near-miss passage: Sigma rule: Detects loading of "credui.dll" and related DLLs by an uncommon process. Attackers might leverage this DLL for potential. Logsource: windows / image_load. Rule: title: CredUI.DLL Loaded By Uncommon Process id: 9ae01559-cf7e-4f8e-8e14-4c290a1b4784 status: test description: Detects loading of "credui.dll" and related DLLs by an uncommon process. Attackers might leverage this DLL for potential use of "CredUIPromptForCredentials" or "CredUnPackAuthenticationBufferW". references: - https://securitydatasets.com/notebooks/atomic/windows/credential_access/SDWIN-201020013208.html - https://github.com/redcanaryco/atomic-red-team/blob/f339e7da7d05f6057fdfcdd3742bfcf365fee2a9/atomics/T1056.002/T1056.002.md#atomic-test-2---powershell---prompt-user-for-password - https://learn.microsoft.com/en-us/windows/win32/api/wincred/nf-wincred-creduipromptforcredentialsa - https://github.com/S12cybersecurity/RDPCredentialStealer author: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research) date: 2020-10-20 modified: 2026-06-29 tags: - attack.credential-access - attack.collection - attack.t1056.002 logsource: category: image_load product: windows detection: selection: - ImageLoaded|endswith: - \credui.dll - \wincredui.dll - OriginalFileName: - credui.dll - wincredui.dll filter_main_generic: Image|startswith: - C:\Program Files (x86)\ - C:\Program Files\ - C:\Windows\System32\ - C:\Windows\SysWOW64\ - C:\Windows\SystemApps\ filter_main_full: Image: - C:\Windows\explorer.exe - C:\Windows\ImmersiveControlPanel\SystemSettings.exe - C:\Windows\regedit.exe filter_optional_opera: Image|endswith: \opera_autoupdate.exe filter_optional_process_explorer: Image|endswith: - \procexp64.exe - \procexp64a.exe - \procexp.exe filter_optional_teams: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\Teams\ Image|endswith: \Teams.exe filter_optional_onedrive: Image|startswith: C:\Users\ Image|contains: \AppData\Local\Microsoft\OneDrive\ condition: selection and not 1 of filter_main_* and not 1 of filter_optional_* falsepositives: - Other legitimate processes loading those DLLs in your environment. level: medium