Suspicious Desktopimgdownldr Target File
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About the rule
Rule Type
Standard
Rule Description
Detects a suspicious Microsoft desktopimgdownldr file creation that stores a file to a suspicious location or contains a file with a suspicious extension
Severity
Trouble
Rule Requirement
Criteria
Action1: actionname = "File Created or Modified" AND (PROCESSNAME endswith "\svchost.exe" AND (FILENAME contains "\Personalization\LockScreenImage" OR OBJECTNAME contains "\Personalization\LockScreenImage")) AND (FILENAME notcontains "C:\Windows" AND OBJECTNAME notcontains "C:\Windows") AND (FILENAME notcontains ".jpg,.jpeg,.png" AND OBJECTNAME notcontains ".jpg,.jpeg,.png") select Action1.HOSTNAME,Action1.MESSAGE,Action1.USERNAME,Action1.DOMAIN,Action1.OBJECTNAME,Action1.FILENAME,Action1.PROCESSNAME
Detection
Execution Mode
realtime
Log Sources
Windows
Author
Florian Roth (Nextron Systems)
