Potential CVE-2023-36884 URL Request Pattern Traffic

 1title: Potential CVE-2023-36884 URL Request Pattern Traffic
 2id: d9365e39-febd-4a4b-8441-3ca91bb9d333
 3status: test
 4description: 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
 5references:
 6    - https://blogs.blackberry.com/en/2023/07/romcom-targets-ukraine-nato-membership-talks-at-nato-summit
 7author: X__Junior
 8date: 2023-07-12
 9modified: 2026-06-14
10tags:
11    - attack.command-and-control
12    - cve.2023-36884
13    - detection.emerging-threats
14logsource:
15    category: proxy
16detection:
17    # Examples:
18    #   hxxp://74.50[.]94[.]156/MSHTML_C7/zip_k.asp?d=99.99.99.99.
19    #   104.234[.]239[.]26/share1/MSHTML_C7/1/99.99.99.99_a15fa_file001.htm?d=99.99.99.99_ a15fa_
20    selection:
21        cs-method: 'GET'
22        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}'
23    condition: selection
24falsepositives:
25    - Unknown
26level: high