Potentially Suspicious Cabinet File Expansion
Last updated on:
In this page
About the rule
Rule Type
Standard
Rule Description
Detects the expansion or decompression of cabinet files from potentially suspicious or uncommon locations, e.g. seen in Iranian MeteorExpress related attacks
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "Process started" AND (PROCESSNAME endswith "\expand.exe" AND COMMANDLINE contains "-F:,/F:,–F:,—F:,―F:") AND (COMMANDLINE contains ":\Perflogs\,:\ProgramData,:\Users\Public\,:\Windows\Temp\,\Admin$\,\AppData\Local\Temp\,\AppData\Roaming\,\C$\,\Temporary Internet" OR ((COMMANDLINE contains ":\Users" AND COMMANDLINE contains "\Favorites") OR (COMMANDLINE contains ":\Users" AND COMMANDLINE contains "\Favourites") OR (COMMANDLINE contains ":\Users" AND COMMANDLINE contains "\Contacts"))) AND (PARENTPROCESSNAME != "C:\Program Files (x86)\Dell\UpdateService\ServiceShell.exe" OR COMMANDLINE notcontains "C:\ProgramData\Dell\UpdateService\Temp") select Action1.HOSTNAME,Action1.MESSAGE,Action1.COMMANDLINE,Action1.FILE_NAME,Action1.PROCESSNAME,Action1.USERNAME,Action1.PARENTPROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Bhabesh Raj, X__Junior (Nextron Systems)
