Private Keys Reconnaissance Via CommandLine Tools
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About the rule
Rule Type
Standard
Rule Description
Adversaries may search for private key certificate files on compromised systems for insecurely stored credential
Severity
Trouble
Rule Requirement
Criteria
Action1:
actionname = "Process started" AND COMMANDLINE contains ".key,.pgp,.gpg,.ppk,.p12,.pem,.pfx,.cer,.p7b,.asc" AND (((PROCESSNAME endswith "\cmd.exe" OR ORIGINALFILENAME = "Cmd.Exe") AND COMMANDLINE contains "dir ") OR ((PROCESSNAME endswith "\powershell.exe,\pwsh.exe" OR ORIGINALFILENAME = "PowerShell.EXE,pwsh.dll") AND COMMANDLINE contains "Get-ChildItem ") OR (PROCESSNAME endswith "\findstr.exe" OR ORIGINALFILENAME = "FINDSTR.EXE"))
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
frack113, Nasreddine Bencherchali (Nextron Systems)
