Suspicious Calculator Usage
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About the rule
Rule Type
Standard
Rule Description
Detects suspicious use of 'calc.exe' with command line parameters or in a suspicious directory, which is likely caused by some PoC or detection evasion.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND COMMANDLINE contains "\calc.exe " OR (PROCESSNAME endswith "\calc.exe" AND PROCESSNAME notcontains ":\Windows\System32\,:\Windows\SysWOW64\,:\Windows\WinSxS") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
