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Threat Huntlowtest

PsExec Default Named Pipe

Detects PsExec service default pipe creation

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Launch
Thomas PatzkeCreated Mon Jun 12Updated Sun Oct 09f3f3a972-f982-40ad-b63c-bca6afdfad7cwindows
Hunting Hypothesis
Log Source
WindowsNamed Pipe Created
ProductWindows← raw: windows
CategoryNamed Pipe Created← raw: pipe_created

Definition

Note that you have to configure logging for Named Pipe Events in Sysmon config (Event ID 17 and Event ID 18). The basic configuration is in popular sysmon configuration (https://github.com/SwiftOnSecurity/sysmon-config), but it is worth verifying. You can also use other repo, e.g. https://github.com/Neo23x0/sysmon-config, https://github.com/olafhartong/sysmon-modular. How to test detection? You can check powershell script from this site https://svch0st.medium.com/guide-to-named-pipes-and-hunting-for-cobalt-strike-pipes-dc46b2c5f575

Detection Logic
Detection Logic1 selector
detection:
    selection:
        PipeName: '\PSEXESVC'
    condition: selection
False Positives
Unknown

False positive likelihood has not been assessed. Additional context may be needed during triage.

References
1
Resolving title…
jpcert.or.jp
2
Resolving title…
jpcertcc.github.io
MITRE ATT&CK

Other

detection.threat-hunting
Related Rules
DerivedDetectionmedium

PsExec Service Installation

Detects PsExec service installation and execution events

This rule was derived from the related rule - both detect similar activity with different scope.

Rule Metadata
Rule ID
f3f3a972-f982-40ad-b63c-bca6afdfad7c
Status
test
Level
low
Type
Threat Hunt
Created
Mon Jun 12
Modified
Sun Oct 09
Author
Thomas Patzke
Path
rules-threat-hunting/windows/pipe_created/pipe_created_sysinternals_psexec_default_pipe.yml
Raw Tags
attack.executionattack.t1569.002attack.s0029detection.threat-hunting
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