Potential Persistence Via Notepad++ Plugins
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About the rule
Rule Type
Standard
Rule Description
Detects creation of new ".dll" files inside the plugins directory of a notepad++ installation by a process other than "gup.exe". Which could indicates possible persistence
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "File Created or Modified" AND ((FILENAME contains "\Notepad++\plugins" OR OBJECTNAME contains "\Notepad++\plugins") AND (FILENAME endswith ".dll" OR OBJECTNAME endswith ".dll")) AND (PROCESSNAME notendswith "\Notepad++\updater\gup.exe" AND (PROCESSNAME notstartswith "C:\Users" OR PROCESSNAME notcontains "\AppData\Local\Temp" OR PROCESSNAME notendswith "\target.exe,Installer.x64.exe")) select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems)
