Suspicious Reg Add BitLocker

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About the rule

Rule Type

Standard

Rule Description

Detects suspicious addition to BitLocker related registry keys via the reg.exe utility

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (COMMANDLINE contains "REG" AND COMMANDLINE contains "ADD" AND COMMANDLINE contains "\SOFTWARE\Policies\Microsoft\FVE" AND COMMANDLINE contains "/v" AND COMMANDLINE contains "/f") AND COMMANDLINE contains "EnableBDEWithNoTPM,UseAdvancedStartup,UseTPM,UseTPMKey,UseTPMKeyPIN,RecoveryKeyMessageSource,UseTPMPIN,RecoveryKeyMessage" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

frack113