Potentially Suspicious Regsvr32 HTTP IP Pattern
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About the rule
Rule Type
Standard
Rule Description
Detects regsvr32 execution to download and install DLLs located remotely where the address is an IP address.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\regsvr32.exe" OR ORIGINALFILENAME = "REGSVR32.EXE") AND (COMMANDLINE contains " /i:http://1, /i:http://2, /i:http://3, /i:http://4, /i:http://5, /i:http://6, /i:http://7, /i:http://8, /i:http://9, /i:https://1, /i:https://2, /i:https://3, /i:https://4, /i:https://5, /i:https://6, /i:https://7, /i:https://8, /i:https://9" OR COMMANDLINE contains " -i:http://1, -i:http://2, -i:http://3, -i:http://4, -i:http://5, -i:http://6, -i:http://7, -i:http://8, -i:http://9, -i:https://1, -i:https://2, -i:https://3, -i:https://4, -i:https://5, -i:https://6, -i:https://7, -i:https://8, -i:https://9") 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)
