Uncommon Extension Shim Database Installation Via Sdbinst.EXE
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About the rule
Rule Type
Standard
Rule Description
Detects installation of a potentially suspicious new shim with an uncommon extension using sdbinst.exe. Adversaries may establish persistence and/or elevate privileges by executing malicious content triggered by application shims
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND (PROCESSNAME endswith "\sdbinst.exe" OR ORIGINALFILENAME = "sdbinst.exe") AND (COMMANDLINE notcontains ".sdb" AND (COMMANDLINE notendswith " -c, -f, -mm, -t" AND COMMANDLINE notcontains " -m -bg") AND isExist(COMMANDLINE))
select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME,Action1.DOMAIN,Action1.ORIGINALFILENAME,Action1.PARENTPROCESSID,Action1.PROCESSID,Action1.PRODUCT_NAME,Action1.SECURITYID
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
