Impacket AtExec Suspicious Temp File Creation

calendar Jan 30, 2023 · attack.s0357 attack.execution attack.t1053 attack.t1053.002  ·
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Detects Atexec.py (Impacket) suspicious file creation in Windows temp directory.

Sigma rule (View on GitHub)

 1title: Impacket AtExec Suspicious Temp File Creation
 2id: 22514cf3-83dd-4949-931e-69a6d6abe154
 3status: experimental
 4description: Detects Atexec.py (Impacket) suspicious file creation in Windows temp directory.
 5references:
 6    - https://www.13cubed.com/downloads/impacket_exec_commands_cheat_sheet.pdf
 7    - https://www.hackingarticles.in/impacket-guide-smb-msrpc/
 8    - https://u0041.co/blog/post/1
 9author: Micah Babinski
10date: 2023/01/08
11tags:
12    - attack.s0357
13    - attack.execution
14    - attack.t1053
15    - attack.t1053.002
16logsource:
17    product: windows
18    category: file_event
19detection:
20    selection:
21        Image|endswith: '\cmd.exe'
22        TargetFilename|re: '^C:\\Windows\\Temp\\[A-Za-z]{8}\.tmp$'
23    condition: selection
24falsepositives:
25    - Unknown
26level: low```

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