Potential CVE-2023-36884 Exploitation Dropped File

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About the rule

Rule Type

Standard

Rule Description

Detects a specific file being created in the recent folder of Office. These files have been seen being dropped during potential exploitations of CVE-2023-36884

Severity

Trouble

Rule Requirement

Criteria

Action1: actionname = "File Created or Modified" AND (FILENAME startswith "C:\Users" OR OBJECTNAME startswith "C:\Users") AND (FILENAME contains "\AppData\Roaming\Microsoft\Office\Recent" OR OBJECTNAME contains "\AppData\Roaming\Microsoft\Office\Recent") AND (FILENAME endswith "\file001.url" OR OBJECTNAME endswith "\file001.url") 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), X__Junior (Nextron Systems)