{"id":"9f546b25-5f12-4c8d-8532-5893dcb1e4b8","title":"Potentially Suspicious Child Process Of DiskShadow.EXE","description":"Detects potentially suspicious child processes of \"Diskshadow.exe\". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules.","author":"Nasreddine Bencherchali (Nextron Systems)","status":"test","level":"medium","date":"2023-09-15","modified":"","tags":["attack.stealth","attack.t1218"],"technique_ids":["T1218"],"logsource":{"category":"process_creation","product":"windows"},"falsepositives":["False postitve can occur in cases where admin scripts levreage the \"exec\" flag to execute applications"],"references":["https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/","https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration","https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4","https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow","https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf","https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware","https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/"],"source_path":"rules/windows/process_creation/proc_creation_win_diskshadow_child_process_susp.yml","source_sha256":"9610044de5fbd1628e7489b5a171add3717e7ee591f55007e583780541449b88","source_url":"https://github.com/anpa1200/sigma/blob/b249e9683190cffdcaf188ccbfb90bf4759844e1/rules/windows/process_creation/proc_creation_win_diskshadow_child_process_susp.yml","license":"Detection Rule License 1.1","license_url":"https://github.com/SigmaHQ/Detection-Rule-License/blob/main/LICENSE.Detection.Rules.md","yaml":"title: Potentially Suspicious Child Process Of DiskShadow.EXE\nid: 9f546b25-5f12-4c8d-8532-5893dcb1e4b8\nrelated:\n    - id: fa1a7e52-3d02-435b-81b8-00da14dd66c1 # Diskshadow Script Mode - Execution From Potential Suspicious Location\n      type: similar\n    - id: 1dde5376-a648-492e-9e54-4241dd9b0c7f # Diskshadow Script Mode - Uncommon Script Extension Execution\n      type: similar\n    - id: 56b1dde8-b274-435f-a73a-fb75eb81262a # Diskshadow Child Process Spawned\n      type: similar\n    - id: 0c2f8629-7129-4a8a-9897-7e0768f13ff2 # Diskshadow Script Mode Execution\n      type: similar\nstatus: test\ndescription: Detects potentially suspicious child processes of \"Diskshadow.exe\". This could be an attempt to bypass parent/child relationship detection or application whitelisting rules.\nreferences:\n    - https://bohops.com/2018/03/26/diskshadow-the-return-of-vss-evasion-persistence-and-active-directory-database-extraction/\n    - https://www.ired.team/offensive-security/credential-access-and-credential-dumping/ntds.dit-enumeration\n    - https://medium.com/@cyberjyot/lolbin-execution-via-diskshadow-f6ff681a27a4\n    - https://learn.microsoft.com/en-us/windows-server/administration/windows-commands/diskshadow\n    - https://www.lifars.com/wp-content/uploads/2022/01/GriefRansomware_Whitepaper-2.pdf\n    - https://www.zscaler.com/blogs/security-research/technical-analysis-crytox-ransomware\n    - https://research.checkpoint.com/2022/evilplayout-attack-against-irans-state-broadcaster/\nauthor: Nasreddine Bencherchali (Nextron Systems)\ndate: 2023-09-15\ntags:\n    - attack.stealth\n    - attack.t1218\nlogsource:\n    category: process_creation\n    product: windows\ndetection:\n    selection:\n        ParentImage|endswith: '\\diskshadow.exe'\n        Image|endswith:\n            # Note: add or remove additional binaries according to your org needs\n            - '\\certutil.exe'\n            - '\\cscript.exe'\n            - '\\mshta.exe'\n            - '\\powershell.exe'\n            - '\\pwsh.exe'\n            - '\\regsvr32.exe'\n            - '\\rundll32.exe'\n            - '\\wscript.exe'\n    condition: selection\nfalsepositives:\n    - False postitve can occur in cases where admin scripts levreage the \"exec\" flag to execute applications\nlevel: medium\n","validation":"yaml_parsed_not_backend_compiled_or_live_validated","techniques":[{"key":"enterprise/T1218","id":"T1218","name":"System Binary Proxy Execution","page":"techniques/enterprise/T1218/"}],"data_path":"data/detection-rules/9f546b25-5f12-4c8d-8532-5893dcb1e4b8.json","kind":"sigma"}