Loaded Module Enumeration Via Tasklist.EXE

calendar Mar 15, 2024 · attack.t1003  ·
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Detects the enumeration of a specific DLL or EXE being used by a binary via "tasklist.exe". This is often used by attackers in order to find the specific process identifier (PID) that is using the DLL in question. In order to dump the process memory or perform other nefarious actions.

Sigma rule (View on GitHub)

 1title: Loaded Module Enumeration Via Tasklist.EXE
 2id: 34275eb8-fa19-436b-b959-3d9ecd53fa1f
 3status: experimental
 4description: |
 5    Detects the enumeration of a specific DLL or EXE being used by a binary via "tasklist.exe".
 6    This is often used by attackers in order to find the specific process identifier (PID) that is using the DLL in question.
 7    In order to dump the process memory or perform other nefarious actions.    
 8references:
 9    - https://www.n00py.io/2021/05/dumping-plaintext-rdp-credentials-from-svchost-exe/
10    - https://pentestlab.blog/tag/svchost/
11author: Swachchhanda Shrawan Poudel
12date: 2024/02/12
13modified: 2024/03/13
14tags:
15    - attack.t1003
16logsource:
17    product: windows
18    category: process_creation
19detection:
20    selection_img:
21        - Image|endswith: '\tasklist.exe'
22        - OriginalFileName: 'tasklist.exe'
23    selection_flags:
24        CommandLine|contains|windash: '-m'
25    selection_module:
26        # Note: add other interesting modules or binaries
27        CommandLine|contains: 'rdpcorets.dll'
28    condition: all of selection_*
29falsepositives:
30    - Unknown
31level: medium

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