Suspect Svchost Activity

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About the rule

Rule Type

Standard

Rule Description

It is extremely abnormal for svchost.exe to spawn without any CLI arguments and is normally observed when a malicious process spawns the process and injects code into the process memory space.

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (COMMANDLINE endswith "svchost.exe" AND PROCESSNAME endswith "\svchost.exe") AND (PARENTPROCESSNAME notendswith "\rpcnet.exe,\rpcnetp.exe" AND isExist(COMMANDLINE)) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

David Burkett, @signalblur