REGISTER_APP.VBS Proxy Execution

calendar Oct 17, 2023 · attack.defense_evasion attack.t1218  ·
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Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.

Sigma rule (View on GitHub)

 1title: REGISTER_APP.VBS Proxy Execution
 2id: 1c8774a0-44d4-4db0-91f8-e792359c70bd
 3status: test
 4description: Detects the use of a Microsoft signed script 'REGISTER_APP.VBS' to register a VSS/VDS Provider as a COM+ application.
 5references:
 6    - https://twitter.com/sblmsrsn/status/1456613494783160325?s=20
 7author: Nasreddine Bencherchali (Nextron Systems)
 8date: 2022/08/19
 9tags:
10    - attack.defense_evasion
11    - attack.t1218
12logsource:
13    category: process_creation
14    product: windows
15detection:
16    selection:
17        CommandLine|contains|all:
18            - '\register_app.vbs'
19            - '-register'
20    condition: selection
21falsepositives:
22    - Legitimate usage of the script. Always investigate what's being registered to confirm if it's benign
23level: medium

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