Uncommon AddinUtil.EXE CommandLine Execution
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About the rule
Rule Type
Standard
Rule Description
Detects execution of the Add-In deployment cache updating utility (AddInutil.exe) with uncommon Addinroot or Pipelineroot paths. An adversary may execute AddinUtil.exe with uncommon Addinroot/Pipelineroot paths that point to the adversaries Addins.Store payload.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND ((PROCESSNAME endswith "\addinutil.exe" OR ORIGINALFILENAME = "AddInUtil.exe") AND COMMANDLINE contains "-AddInRoot:,-PipelineRoot:") AND COMMANDLINE notcontains "-AddInRoot:"C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA,-AddInRoot:C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA,-PipelineRoot:"C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA,-PipelineRoot:C:\Program Files (x86)\Common Files\Microsoft Shared\VSTA" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Michael McKinley (@McKinleyMike), Tony Latteri (@TheLatteri)
