Detectionmediumtest

REGISTER_APP.VBS Proxy Execution

Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.

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

Nasreddine Bencherchali (Nextron Systems)Created Fri Aug 191c8774a0-44d4-4db0-91f8-e792359c70bdwindows

Log Source

WindowsProcess Creation

ProductWindows← raw: windows

CategoryProcess Creation← raw: process_creation

Events generated when a new process is spawned on the system. Covers command-line arguments, parent/child relationships, and process metadata.

Detection Logic

detection:
    selection:
        CommandLine|contains|all:
            - '\register_app.vbs'
            - '-register'
    condition: selection

False Positives

Legitimate usage of the script. Always investigate what's being registered to confirm if it's benign

References

MITRE ATT&CK

Tactics

Techniques

Rule Metadata

Rule ID

1c8774a0-44d4-4db0-91f8-e792359c70bd

Status

test

Level

medium

Type

Detection

Created

Fri Aug 19

Author

Path

rules/windows/process_creation/proc_creation_win_lolbin_register_app.yml

Raw Tags

attack.defense-evasionattack.t1218