{"id":"273a8dd8-3742-4302-bcc7-7df5a80fe425","title":"VMMap Unsigned Dbghelp.DLL Potential Sideloading","description":"Detects potential DLL sideloading of an unsigned dbghelp.dll by the Sysinternals VMMap.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"high","date":"2023-07-28","modified":"2023-09-05","tags":["attack.persistence","attack.privilege-escalation","attack.execution","attack.stealth","attack.t1574.001"],"technique_ids":["T1574.001"],"logsource":{"category":"image_load","product":"windows"},"falsepositives":["Unknown"],"references":["https://techcommunity.microsoft.com/t5/sysinternals-blog/zoomit-v7-1-procdump-2-0-for-linux-process-explorer-v17-05/ba-p/3884766"],"source_path":"rules/windows/image_load/image_load_side_load_vmmap_dbghelp_unsigned.yml","source_sha256":"8c3f93422aa85d6c4ace833090033d59769515f6abef1f90a5c0c2d8fb50cc43","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/image_load/image_load_side_load_vmmap_dbghelp_unsigned.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: VMMap Unsigned Dbghelp.DLL Potential Sideloading\nid: 273a8dd8-3742-4302-bcc7-7df5a80fe425\nrelated:\n    - id: 98ffaed4-aec2-4e04-9b07-31492fe68b3d\n      type: similar\nstatus: test\ndescription: Detects potential DLL sideloading of an unsigned dbghelp.dll by the Sysinternals VMMap.\nreferences:\n    - https://techcommunity.microsoft.com/t5/sysinternals-blog/zoomit-v7-1-procdump-2-0-for-linux-process-explorer-v17-05/ba-p/3884766\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-07-28\nmodified: 2023-09-05\ntags:\n    - attack.persistence\n    - attack.privilege-escalation\n    - attack.execution\n    - attack.stealth\n    - attack.t1574.001\nlogsource:\n    category: image_load\n    product: windows\ndetection:\n    selection:\n        ImageLoaded|contains: 'C:\\Debuggers\\dbghelp.dll'\n        Image|endswith:\n            - '\\vmmap.exe'\n            - '\\vmmap64.exe'\n    filter_main_signed:\n        Signed: 'true'\n    condition: selection and not 1 of filter_main_*\nfalsepositives:\n    - Unknown\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/273a8dd8-3742-4302-bcc7-7df5a80fe425.json","kind":"sigma"}