Third Party Software DLL Sideloading
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About the rule
Rule Type
Standard
Rule Description
Detects DLL sideloading of DLLs that are part of third party software (zoom, discord....etc)
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "sa_imageloaded" AND (OBJECTNAME endswith "\commfunc.dll" AND (OBJECTNAME notcontains "\AppData\local\Google\Chrome\Application" AND OBJECTNAME notstartswith "C:\Program Files\Lenovo\Communications Utility\,C:\Program Files (x86)\Lenovo\Communications Utility")) OR (OBJECTNAME endswith "\tosbtkbd.dll" AND OBJECTNAME notstartswith "C:\Program Files\Toshiba\Bluetooth Toshiba Stack\,C:\Program Files (x86)\Toshiba\Bluetooth Toshiba Stack") select Action1.HOSTNAME,Action1.MESSAGE,Action1.PROCESSNAME,Action1.PRODUCT_NAME,Action1.OBJECTNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Nasreddine Bencherchali (Nextron Systems), Wietze Beukema (project and research)
