{"id":"7002aa10-b8d4-47ae-b5ba-51ab07e228b9","title":"Potential Mpclient.DLL Sideloading Via Defender Binaries","description":"Detects potential sideloading of \"mpclient.dll\" by Windows Defender processes (\"MpCmdRun\" and \"NisSrv\") from their non-default directory.","author":"Bhabesh Raj","status":"test","level":"high","date":"2022-08-01","modified":"2023-08-04","tags":["attack.privilege-escalation","attack.persistence","attack.execution","attack.stealth","attack.t1574.001"],"technique_ids":["T1574.001"],"logsource":{"product":"windows","category":"process_creation"},"falsepositives":["Unlikely"],"references":["https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool"],"source_path":"rules/windows/process_creation/proc_creation_win_mpcmdrun_dll_sideload_defender.yml","source_sha256":"6ef8f08041dba331d131e697ce08ab0531a66300136c4d4afa7fdc377740cf80","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_mpcmdrun_dll_sideload_defender.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potential Mpclient.DLL Sideloading Via Defender Binaries\nid: 7002aa10-b8d4-47ae-b5ba-51ab07e228b9\nrelated:\n    - id: 418dc89a-9808-4b87-b1d7-e5ae0cb6effc\n      type: similar\nstatus: test\ndescription: Detects potential sideloading of \"mpclient.dll\" by Windows Defender processes (\"MpCmdRun\" and \"NisSrv\") from their non-default directory.\nreferences:\n    - https://www.sentinelone.com/blog/living-off-windows-defender-lockbit-ransomware-sideloads-cobalt-strike-through-microsoft-security-tool\nauthor: Bhabesh Raj\ndate: 2022-08-01\nmodified: 2023-08-04\ntags:\n    - attack.privilege-escalation\n    - attack.persistence\n    - attack.execution\n    - attack.stealth\n    - attack.t1574.001\nlogsource:\n    product: windows\n    category: process_creation\ndetection:\n    selection:\n        Image|endswith:\n            - '\\MpCmdRun.exe'\n            - '\\NisSrv.exe'\n    filter_main_known_locations:\n        Image|startswith:\n            - 'C:\\Program Files (x86)\\Windows Defender\\'\n            - 'C:\\Program Files\\Microsoft Security Client\\'\n            - 'C:\\Program Files\\Windows Defender\\'\n            - 'C:\\ProgramData\\Microsoft\\Windows Defender\\Platform\\'\n            - 'C:\\Windows\\WinSxS\\'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unlikely\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1574.001","id":"T1574.001","name":"DLL","page":"techniques/enterprise/T1574.001/"}],"data_path":"data/detection-rules/7002aa10-b8d4-47ae-b5ba-51ab07e228b9.json","kind":"sigma"}