ET MALWARE WebDAV Retrieving .zip from .url M2 (CVE-2023-36025)

Query · suricata

flow:established,to_client;
flowbits:isset,ET.WebDAVURL;
http.stat_code;
content:"200";
file.data;
content:"[InternetShortcut]"; fast_pattern;
content:".zip"; distance:0;

Rule dependencies

⚠ Higher-order rule. It fires on other rules' alerts, not on raw events, so it cannot fire on its own. Deploy the rules it depends on too.

Depends on

Raw source ET MALWARE WebDAV Retrieving .zip from .url M2 (CVE-2023-36025) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE WebDAV Retrieving .zip from .url M2 (CVE-2023-36025)";
    flow:established,to_client;
    flowbits:isset,ET.WebDAVURL;
    http.stat_code;
    content:"200";
    file.data;
    content:"[InternetShortcut]"; fast_pattern;
    content:".zip"; distance:0;
    reference:url,msrc.microsoft.com/update-guide/vulnerability/CVE-2023-36025;
    reference:url,vulnera.com/newswire/windows-zero-day-cve-2023-36025-vulnerability-poc-exploit-published-by-researchers;
    reference:cve,2023-36025;
    classtype:trojan-activity;
    sid:2049320; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_28, cve CVE_2023_36025, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Low, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_15, reviewed_at 2024_10_14;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.