{"id":"f2485272-a156-4773-82d7-1d178bc4905b","title":"Suspicious Service Installed","description":"Detects installation of NalDrv or PROCEXP152 services via registry-keys to non-system32 folders.\nBoth services are used in the tool Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs), which uses KDU (https://github.com/hfiref0x/KDU)\n","author":"xknow (@xknow_infosec), xorxes (@xor_xes)","status":"test","level":"medium","date":"2019-04-08","modified":"2023-08-17","tags":["attack.defense-impairment","attack.t1685"],"technique_ids":["T1685"],"logsource":{"category":"registry_set","product":"windows"},"falsepositives":["Other legimate tools using this service names and drivers. Note - clever attackers may easily bypass this detection by just renaming the services. Therefore just Medium-level and don't rely on it."],"references":["https://web.archive.org/web/20200419024230/https://blog.dylan.codes/evading-sysmon-and-windows-event-logging/"],"source_path":"rules/windows/registry/registry_set/registry_set_susp_service_installed.yml","source_sha256":"90309a211bab99584313a14d64699dc23a0be6767b4273b808ac2d310aefdcd8","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/registry/registry_set/registry_set_susp_service_installed.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 Service Installed\nid: f2485272-a156-4773-82d7-1d178bc4905b\nstatus: test\ndescription: |\n  Detects installation of NalDrv or PROCEXP152 services via registry-keys to non-system32 folders.\n  Both services are used in the tool Ghost-In-The-Logs (https://github.com/bats3c/Ghost-In-The-Logs), which uses KDU (https://github.com/hfiref0x/KDU)\nreferences:\n    - https://web.archive.org/web/20200419024230/https://blog.dylan.codes/evading-sysmon-and-windows-event-logging/\nauthor: xknow (@xknow_infosec), xorxes (@xor_xes)\ndate: 2019-04-08\nmodified: 2023-08-17\ntags:\n    - attack.defense-impairment\n    - attack.t1685\nlogsource:\n    category: registry_set\n    product: windows\ndetection:\n    selection:\n        TargetObject:\n            - 'HKLM\\System\\CurrentControlSet\\Services\\NalDrv\\ImagePath'\n            - 'HKLM\\System\\CurrentControlSet\\Services\\PROCEXP152\\ImagePath'\n    filter:\n        Image|endswith:\n            # Please add the full paths that you use in your environment to tighten the rule\n            - '\\procexp64.exe'\n            - '\\procexp.exe'\n            - '\\procmon64.exe'\n            - '\\procmon.exe'\n            - '\\handle.exe'\n            - '\\handle64.exe'\n        Details|contains: '\\WINDOWS\\system32\\Drivers\\PROCEXP152.SYS'\n    condition: selection and not filter\nfalsepositives:\n    - Other legimate tools using this service names and drivers. Note - clever attackers may easily bypass this detection by just renaming the services. Therefore just Medium-level and don't rely on it.\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1685","id":"T1685","name":"Disable or Modify Tools","page":"techniques/enterprise/T1685/"}],"data_path":"data/detection-rules/f2485272-a156-4773-82d7-1d178bc4905b.json","kind":"sigma"}