Emerging Threathightest
Potential CVE-2023-36884 Exploitation - Share Access
Detects access to a file share with a naming schema seen being used during exploitation of CVE-2023-36884
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Launch
Emerging Threat
Active Threat
Developed to detect an active or emerging threat. Prioritize investigation of any alerts and correlate with threat intelligence.
Log Source
Windowssecurity
ProductWindows← raw: windows
Servicesecurity← raw: security
Definition
The advanced audit policy setting "Object Access > Audit File Share" must be configured for Success/Failure
Detection Logic
Detection Logic3 selectors
detection:
selection_eid:
EventID: 5140
selection_share_name:
ShareName|contains: '\MSHTML_C7\'
ShareName|re: '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
selection_share_path:
ShareLocalPath|contains: '\MSHTML_C7\'
ShareLocalPath|re: '[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
condition: selection_eid and 1 of selection_share_*False Positives
Unknown
False positive likelihood has not been assessed. Additional context may be needed during triage.
References
MITRE ATT&CK
Tactics
Other
cve.2023-36884detection.emerging-threats
Rule Metadata
Rule ID
3df95076-9e78-4e63-accb-16699c3b74f8
Status
test
Level
high
Type
Emerging Threat
Created
Thu Jul 13
Path
rules-emerging-threats/2023/Exploits/CVE-2023-36884/win_security_exploit_cve_2023_36884_office_windows_html_rce_share_access_pattern.yml
Raw Tags
attack.command-and-controlcve.2023-36884detection.emerging-threats