HighSigmaHQ Nasreddine Bencherchali (Nextron Systems)

Suspicious CustomShellHost Execution

Detects the execution of CustomShellHost.exe where the child isn't located in 'C:\Windows\explorer.exe'. CustomShellHost is a known LOLBin that can be abused by attackers for defense evasion techniques.

Detection logic

Detection requirements

Platform: Windows
The rule states no platform. This is derived from the ATT&CK technique it maps to.
Log source product: windows
Log source category: process_creation

Known benign triggers

False positives are unlikely, investigate matches carefully.

References

Links the source published beside this detection. Reference is the link the source wrote, unmodified. Class is decided by this catalogue from the host and path, not stated by the source. Cited by counts published detections citing the same resource, including this one, and the sources beneath it count the repositories this catalogue ingests, which is not the same as independent research.
Reference	Class	Cited by
github.com/LOLBAS-Project/LOLBAS/pull/180	Tool	Only this detection cites it
lolbas-project.github.io/lolbas/Binaries/CustomShellHost/	Tool	Only this detection cites it

Detection rules

Suspicious CustomShellHost Execution

Detection logic

Detection requirements

Known benign triggers

MITRE ATT&CK mappings

References

From the source

Licence

Authorship

Detection rules