ET MALWARE WebDAV Retrieving .vbs from .url M1 (CVE-2023-36025)

Query · suricata

flow:established,to_client;
xbits:isset,ET.PROPFIND,track ip_dst;
http.stat_code;
content:"200";
http.content_type;
content:"application/x-mswinurl"; bsize:22;
file.data;
content:"[InternetShortcut]";
content:"URL=file://"; distance:0; fast_pattern;
content:".vbs"; 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 .vbs from .url M1 (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 .vbs from .url M1 (CVE-2023-36025)";
    flow:established,to_client;
    xbits:isset,ET.PROPFIND,track ip_dst;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"application/x-mswinurl"; bsize:22;
    file.data;
    content:"[InternetShortcut]";
    content:"URL=file://"; distance:0; fast_pattern;
    content:".vbs"; 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:2049398; rev:3;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_29, cve CVE_2023_36025, deployment Perimeter, confidence Low, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_06_15, reviewed_at 2024_10_14;
)

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