Forest Blizzard APT - Custom Protocol Handler DLL Registry Set
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About the rule
Rule Type
Standard
Rule Description
Detects the setting of the DLL that handles the custom protocol handler. Seen being created by Forest Blizzard APT as reported by MSFT.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Registry value modified" AND (OBJECTNAME contains "\CLSID\{026CC6D7-34B2-33D5-B551-CA31EB6CE345}\Server" OR (OBJECTNAME endswith "\CLSID\{026CC6D7-34B2-33D5-B551-CA31EB6CE345}" AND OBJECTVALUENAME startswith "Server")) AND INFORMATION endswith ".dll" select Action1.HOSTNAME,Action1.MESSAGE,Action1.OBJECTNAME,Action1.PROCESSNAME,Action1.PREVVAL,Action1.CHANGES
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
