Emerging Threathightest
Potential CVE-2303-36884 URL Request Pattern Traffic
Detects a specific URL pattern containing a specific extension and parameters pointing to an IP address. This pattern was seen being used by RomCOM potentially exploiting 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
Proxy Log
CategoryProxy Log← raw: proxy
Detection Logic
Detection Logic1 selector
detection:
# Examples:
# hxxp://74.50[.]94[.]156/MSHTML_C7/zip_k.asp?d=99.99.99.99.
# 104.234[.]239[.]26/share1/MSHTML_C7/1/99.99.99.99_a15fa_file001.htm?d=99.99.99.99_ a15fa_
selection:
cs-method: 'GET'
c-uri|re: '\.(zip|asp|htm|url|xml|chm|mht|vbs|search-ms)\?d=[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}\.[0-9]{1,3}'
condition: selectionFalse 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
d9365e39-febd-4a4b-8441-3ca91bb9d333
Status
test
Level
high
Type
Emerging Threat
Created
Wed Jul 12
Author
Path
rules-emerging-threats/2023/Exploits/CVE-2023-36884/proxy_exploit_cve_2023_36884_office_windows_html_rce_extenstion_ip_pattern_traffic.yml
Raw Tags
attack.command-and-controlcve.2023-36884detection.emerging-threats