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Detectioncriticaltest

HackTool - Koh Default Named Pipe

Detects creation of default named pipes used by the Koh tool

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Launch
Nasreddine Bencherchali (Nextron Systems)Created Fri Jul 08Updated Mon Aug 070adc67e0-a68f-4ffd-9c43-28905aad5d6awindows
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:
            - '\imposecost'
            - '\imposingcost'
    condition: selection
False Positives
Unlikely

False positives are unlikely for most environments. High confidence detection.

References
1
Resolving title…
github.com
MITRE ATT&CK
Rule Metadata
Rule ID
0adc67e0-a68f-4ffd-9c43-28905aad5d6a
Status
test
Level
critical
Type
Detection
Created
Fri Jul 08
Modified
Mon Aug 07
Author
Nasreddine Bencherchali (Nextron Systems)
Path
rules/windows/pipe_created/pipe_created_hktl_koh_default_pipe.yml
Raw Tags
attack.defense-evasionattack.privilege-escalationattack.credential-accessattack.t1528attack.t1134.001
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