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Detectionmediumtest

PUA - CSExec Default Named Pipe

Detects default CSExec pipe creation

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Launch
Nikita Nazarov, oscd.community, Nasreddine Bencherchali (Nextron Systems)Created Mon Aug 07Updated Thu Nov 30f318b911-ea88-43f4-9281-0de23ede628ewindows
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|contains: '\csexecsvc'
    condition: selection
False Positives

Legitimate Administrator activity

References
1
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drive.google.com
2
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github.com
MITRE ATT&CK
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Rule Metadata
Rule ID
f318b911-ea88-43f4-9281-0de23ede628e
Status
test
Level
medium
Type
Detection
Created
Mon Aug 07
Modified
Thu Nov 30
Author
Nikita Nazarov, oscd.community, Nasreddine Bencherchali (Nextron Systems)
Path
rules/windows/pipe_created/pipe_created_pua_csexec_default_pipe.yml
Raw Tags
attack.lateral-movementattack.t1021.002attack.executionattack.t1569.002
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