{"id":"c462f537-a1e3-41a6-b5fc-b2c2cef9bf82","title":"Suspicious PsExec Execution","description":"detects execution of psexec or paexec with renamed service name, this rule helps to filter out the noise if psexec is used for legit purposes or if attacker uses a different psexec client other than sysinternal one","author":"Samir Bousseaden","status":"test","level":"high","date":"2019-04-03","modified":"2022-08-11","tags":["attack.lateral-movement","attack.t1021.002"],"technique_ids":["T1021.002"],"logsource":{"product":"windows","service":"security","definition":"The advanced audit policy setting \"Object Access > Audit Detailed File Share\" must be configured for Success/Failure"},"falsepositives":["Unknown"],"references":["https://web.archive.org/web/20230329171218/https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.html"],"source_path":"rules/windows/builtin/security/win_security_susp_psexec.yml","source_sha256":"ae489024e3d788e6700bb91c63a233dc568224ea8708f335f9dce283f7d01228","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/builtin/security/win_security_susp_psexec.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Suspicious PsExec Execution\nid: c462f537-a1e3-41a6-b5fc-b2c2cef9bf82\nstatus: test\ndescription: detects execution of psexec or paexec with renamed service name, this rule helps to filter out the noise if psexec is used for legit purposes or if attacker uses a different psexec client other than sysinternal one\nreferences:\n    - https://web.archive.org/web/20230329171218/https://blog.menasec.net/2019/02/threat-hunting-3-detecting-psexec.html\nauthor: Samir Bousseaden\ndate: 2019-04-03\nmodified: 2022-08-11\ntags:\n    - attack.lateral-movement\n    - attack.t1021.002\nlogsource:\n    product: windows\n    service: security\n    definition: 'The advanced audit policy setting \"Object Access > Audit Detailed File Share\" must be configured for Success/Failure'\ndetection:\n    selection1:\n        EventID: 5145\n        ShareName: '\\\\\\\\\\*\\\\IPC$' # looking for the string \\\\*\\IPC$\n        RelativeTargetName|endswith:\n            - '-stdin'\n            - '-stdout'\n            - '-stderr'\n    filter:\n        RelativeTargetName|startswith: 'PSEXESVC'\n    condition: selection1 and not filter\nfalsepositives:\n    - Unknown\nlevel: high\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1021.002","id":"T1021.002","name":"SMB/Windows Admin Shares","page":"techniques/enterprise/T1021.002/"}],"data_path":"data/detection-rules/c462f537-a1e3-41a6-b5fc-b2c2cef9bf82.json","kind":"sigma"}