Potential PsExec Remote Execution

calendar Sep 22, 2025 · attack.resource-development attack.t1587.001  ·
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Detects potential psexec command that initiate execution on a remote systems via common commandline flags used by the utility

Sigma rule (View on GitHub)

 1title: Potential PsExec Remote Execution
 2id: ea011323-7045-460b-b2d7-0f7442ea6b38
 3status: test
 4description: Detects potential psexec command that initiate execution on a remote systems via common commandline flags used by the utility
 5references:
 6    - https://learn.microsoft.com/en-us/sysinternals/downloads/psexec
 7    - https://www.poweradmin.com/paexec/
 8    - https://www.fireeye.com/blog/threat-research/2020/10/kegtap-and-singlemalt-with-a-ransomware-chaser.html
 9author: Florian Roth (Nextron Systems), Nasreddine Bencherchali (Nextron Systems)
10date: 2023-02-28
11modified: 2025-09-01
12tags:
13    - attack.resource-development
14    - attack.t1587.001
15logsource:
16    category: process_creation
17    product: windows
18detection:
19    selection:
20        # Accepting EULA in commandline - often used in automated attacks
21        CommandLine|contains|all:
22            - 'accepteula'
23            - ' -u '
24            - ' -p '
25            - ' \\\\'
26    filter_main_localhost:
27        CommandLine|contains:
28            - '\\\\localhost'
29            - '\\\\127.'
30    condition: selection and not 1 of filter_main_*
31falsepositives:
32    - Unknown
33level: high

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