Security Tools Keyword Lookup Via Findstr.EXE
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About the rule
Rule Type
Standard
Rule Description
Detects execution of "findstr" to search for common names of security tools. Attackers often pipe the results of recon commands such as "tasklist" or "whoami" to "findstr" in order to filter out the results. This detection focuses on the keywords that the attacker might use as a filter.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\find.exe,\findstr.exe" OR ORIGINALFILENAME = "FIND.EXE,FINDSTR.EXE") AND COMMANDLINE endswith " avira, avira", cb, cb", cylance, cylance", defender, defender", kaspersky, kaspersky", kes, kes", mc, mc", sec, sec", sentinel, sentinel", symantec, symantec", virus, virus"" 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), frack113
