Sigma high test sigma
Disable Windows Event Logging Via Registry
Detects tampering with the "Enabled" registry key in order to disable Windows logging of a Windows event channel
Detection Logic
{
"selection": {
"TargetObject
| contains": "\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\",
"TargetObject
| endswith": "\\Enabled",
"Details": "DWORD (0x00000000)"
},
"filter_main_wevutil": {
"Image": "C:\\Windows\\system32\\wevtutil.exe"
},
"filter_main_iis": {
"Image
| startswith": "C:\\Windows\\winsxs\\",
"Image
| endswith": "\\TiWorker.exe"
},
"filter_main_svchost": {
"Image": "C:\\Windows\\System32\\svchost.exe",
"TargetObject
| contains": [
"\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\Microsoft-Windows-FileInfoMinifilter",
"\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\Microsoft-Windows-ASN1\\",
"\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\Microsoft-Windows-Kernel-AppCompat\\",
"\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\Microsoft-Windows-Runtime\\Error\\",
"\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\Microsoft-Windows-CAPI2/Operational\\"
]
},
"filter_main_trusted_installer": {
"Image": "C:\\Windows\\servicing\\TrustedInstaller.exe",
"TargetObject
| contains": "\\Microsoft\\Windows\\CurrentVersion\\WINEVT\\Channels\\Microsoft-Windows-Compat-Appraiser"
},
"filter_optional_empty": {
"Image": ""
},
"filter_optional_null": {
"Image": null
},
"condition": "selection and not 1 of filter_main_* and not 1 of filter_optional_*"
} False Positives
- ⚠ Rare falsepositives may occur from legitimate administrators disabling specific event log for troubleshooting
Field Validations
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