{"id":"a49fa4d5-11db-418c-8473-1e014a8dd462","title":"Lsass Memory Dump via Comsvcs DLL","description":"Detects adversaries leveraging the MiniDump export function from comsvcs.dll via rundll32 to perform a memory dump from lsass.","author":"Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)","status":"test","level":"high","date":"2020-10-20","modified":"2023-11-29","tags":["attack.credential-access","attack.t1003.001"],"technique_ids":["T1003.001"],"logsource":{"category":"process_access","product":"windows"},"falsepositives":["Unknown"],"references":["https://twitter.com/shantanukhande/status/1229348874298388484","https://modexp.wordpress.com/2019/08/30/minidumpwritedump-via-com-services-dll/"],"source_path":"rules/windows/process_access/proc_access_win_lsass_dump_comsvcs_dll.yml","source_sha256":"f5d1a158c4cce63db599f3ce4f231769304f3c7cbbc4909e25bf833028524e67","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_access/proc_access_win_lsass_dump_comsvcs_dll.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Lsass Memory Dump via Comsvcs DLL\nid: a49fa4d5-11db-418c-8473-1e014a8dd462\nstatus: test\ndescription: Detects adversaries leveraging the MiniDump export function from comsvcs.dll via rundll32 to perform a memory dump from lsass.\nreferences:\n    - https://twitter.com/shantanukhande/status/1229348874298388484\n    - https://modexp.wordpress.com/2019/08/30/minidumpwritedump-via-com-services-dll/\nauthor: Roberto Rodriguez (Cyb3rWard0g), OTR (Open Threat Research)\ndate: 2020-10-20\nmodified: 2023-11-29\ntags:\n    - attack.credential-access\n    - attack.t1003.001\nlogsource:\n    category: process_access\n    product: windows\ndetection:\n    selection:\n        TargetImage|endswith: '\\lsass.exe'\n        SourceImage|endswith: '\\rundll32.exe'\n        CallTrace|contains: 'comsvcs.dll'\n    condition: selection\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1003.001","id":"T1003.001","name":"LSASS Memory","page":"techniques/enterprise/T1003.001/"}],"data_path":"data/detection-rules/a49fa4d5-11db-418c-8473-1e014a8dd462.json","kind":"sigma"}