Detectionhightest
Change the Fax Dll
Detect possible persistence using Fax DLL load when service restart
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Log Source
WindowsRegistry Set
ProductWindows← raw: windows
CategoryRegistry Set← raw: registry_set
Detection Logic
Detection Logic2 selectors
detection:
selection:
TargetObject|contains|all:
- '\Software\Microsoft\Fax\Device Providers\'
- '\ImageName'
filter:
Details: '%systemroot%\system32\fxst30.dll' # Windows 10
condition: selection and not filterFalse Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
MITRE ATT&CK
Techniques
Rule Metadata
Rule ID
9e3357ba-09d4-4fbd-a7c5-ad6386314513
Status
test
Level
high
Type
Detection
Created
Sun Jul 17
Modified
Fri Dec 30
Author
Path
rules/windows/registry/registry_set/registry_set_fax_dll_persistance.yml
Raw Tags
attack.persistenceattack.defense-evasionattack.t1112