Rhadamanthys Stealer Module Launch Via Rundll32.EXE

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About the rule

Rule Type

Standard

Rule Description

Detects the use of Rundll32 to launch an NSIS module that serves as the main stealer capability of Rhadamanthys infostealer, as observed in reports and samples in early 2023

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "Process started" AND (ORIGINALFILENAME = "RUNDLL32.EXE" OR PROCESSNAME endswith "\rundll32.exe") AND COMMANDLINE contains "nsis_uns" AND COMMANDLINE contains "PrintUIEntry" select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME

Detection

Execution Mode

realtime

Log Sources

Windows

Author

TropChaud