Impacket AtExec Process Activity
Detect Atexec.py (Impacket) usage to send command output to attacker.
Sigma rule (View on GitHub)
1title: Impacket AtExec Process Activity
2id: ceccdcd7-ab57-407c-bd8f-78b2427eb283
3status: experimental
4description: Detect Atexec.py (Impacket) usage to send command output to attacker.
5references:
6 - https://www.13cubed.com/downloads/impacket_exec_commands_cheat_sheet.pdf
7 - https://www.hackingarticles.in/impacket-guide-smb-msrpc/
8author: Micah Babinski
9date: 2023/01/08
10tags:
11 - attack.s0357
12 - attack.execution
13 - attack.t1053
14 - attack.t1053.002
15logsource:
16 product: windows
17 service: security
18detection:
19 selection:
20 EventID: 4688
21 NewProcessName|endswith: '\cmd.exe'
22 CommandLine|contains|all|windash:
23 - 'cmd.exe'
24 - '/c'
25 - 2>&1
26 CommandLine|re: '^.*Temp\\[A-Za-z]{8}\.tmp.*$'
27 condition: selection
28falsepositives:
29 - Unknown
30level: high
References
Related rules
- Impacket AtExec Suspicious Registry Modification
- Impacket AtExec Suspicious Temp File Creation
- Possible Impacket AtExec Activity
- Suspicious Impacket PSExec Temp Executable File Creation
- Suspicious Impacket Pipe Creation - Psexec