Suspicious Unsigned Dbghelp/Dbgcore DLL Loaded
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About the rule
Rule Type
Standard
Rule Description
Detects the load of dbghelp/dbgcore DLL (used to make memory dumps) by suspicious processes. Tools like ProcessHacker and some attacker tradecract use MiniDumpWriteDump API found in dbghelp.dll or dbgcore.dll. As an example, SilentTrynity C2 Framework has a module that leverages this API to dump the contents of Lsass.exe and transfer it over the network back to the attacker's machine.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "sa_imageloaded" AND OBJECTNAME endswith "\dbghelp.dll,\dbgcore.dll" AND SIGNED = "false" select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.PRODUCT_NAME,Action1.OBJECTNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Perez Diego (@darkquassar), oscd.community, Ecco
