Potential Arbitrary Command Execution Using Msdt.EXE

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About the rule

Rule Type

Standard

Rule Description

Detects processes leveraging the "ms-msdt" handler or the "msdt.exe" binary to execute arbitrary commands as seen in the follina (CVE-2022-30190) vulnerability

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (PROCESSNAME endswith "\msdt.exe" OR ORIGINALFILENAME = "msdt.exe") AND (COMMANDLINE contains "IT_BrowseForFile=" OR (COMMANDLINE contains " PCWDiagnostic" AND COMMANDLINE contains " -af , /af , –af , —af , ―af ")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

Nasreddine Bencherchali (Nextron Systems)