VMToolsd Suspicious Child Process
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About the rule
Rule Type
Standard
Rule Description
Detects suspicious child process creations of VMware Tools process which may indicate persistence setup
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PARENTPROCESSNAME endswith "\vmtoolsd.exe" AND (PROCESSNAME endswith "\cmd.exe,\cscript.exe,\mshta.exe,\powershell.exe,\pwsh.exe,\regsvr32.exe,\rundll32.exe,\wscript.exe" OR ORIGINALFILENAME = "Cmd.Exe,cscript.exe,MSHTA.EXE,PowerShell.EXE,pwsh.dll,REGSVR32.EXE,RUNDLL32.EXE,wscript.exe")) AND ((PROCESSNAME notendswith "\cmd.exe" OR COMMANDLINE notcontains "\VMware\VMware Tools\poweron-vm-default.bat,\VMware\VMware Tools\poweroff-vm-default.bat,\VMware\VMware Tools\resume-vm-default.bat,\VMware\VMware Tools\suspend-vm-default.bat") AND (PROCESSNAME notendswith "\cmd.exe" OR COMMANDLINE != "") AND (PROCESSNAME notendswith "\cmd.exe" OR 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
bohops, Bhabesh Raj
