Potentially Suspicious Self Extraction Directive File Created
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About the rule
Rule Type
Standard
Rule Description
Detects the creation of a binary file with the ".sed" extension. The ".sed" extension stand for Self Extraction Directive files. These files are used by the "iexpress.exe" utility in order to create self extracting packages. Attackers were seen abusing this utility and creating PE files with embedded ".sed" entries. Usually ".sed" files are simple ini files and not PE binaries.
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "File Created or Modified" AND FILENAME endswith ".sed" OR OBJECTNAME endswith ".sed" select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Joseliyo Sanchez, @Joseliyo_Jstnk
