Detectionhightest

New File Association Using Exefile

Detects the abuse of the exefile handler in new file association. Used for bypass of security products.

Convert In Phoenix Studio

Open this Sigma rule in the converter with the YAML preloaded and ready for backend selection.

Andreas HunkelerCreated Fri Nov 19Updated Thu Aug 1744a22d59-b175-4f13-8c16-cbaef5b581ffwindows

Log Source

WindowsRegistry Set

ProductWindows← raw: windows

CategoryRegistry Set← raw: registry_set

Detection Logic

detection:
    selection:
        TargetObject|contains: 'Classes\.'
        Details: 'exefile'
    condition: selection

False Positives

Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References

MITRE ATT&CK

Tactics

Rule Metadata

Rule ID

44a22d59-b175-4f13-8c16-cbaef5b581ff

Status

test

Level

high

Type

Detection

Created

Fri Nov 19

Modified

Thu Aug 17

Author

Path

rules/windows/registry/registry_set/registry_set_file_association_exefile.yml

Raw Tags

attack.defense-evasion