ET EXPLOIT Possible Storm-0978 CVE-2023-36884 Exploitation Attempt M2

Query · suricata

flow:established,to_server;
flowbits:isset,ET.CVE-2023-36884.Storm-0978;
http.method;
content:"GET";
http.uri;
content:"/MSHTML_";
content:".asp?d="; fast_pattern;
pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}_[a-f0-9]{5}_/R";
target:src_ip;

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 EXPLOIT Possible Storm-0978 CVE-2023-36884 Exploitation Attempt M2 · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET EXPLOIT Possible Storm-0978 CVE-2023-36884 Exploitation Attempt M2";
    flow:established,to_server;
    flowbits:isset,ET.CVE-2023-36884.Storm-0978;
    http.method;
    content:"GET";
    http.uri;
    content:"/MSHTML_";
    content:".asp?d="; fast_pattern;
    pcre:"/^\d{1,3}\.\d{1,3}\.\d{1,3}\.\d{1,3}_[a-f0-9]{5}_/R";
    reference:url,blogs.blackberry.com/en/2023/07/romcom-targets-ukraine-nato-membership-talks-at-nato-summit;
    reference:cve,2023-36884;
    classtype:attempted-admin;
    sid:2046811; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_07_12, cve CVE_2023_36884, deployment Perimeter, performance_impact Low, confidence Low, signature_severity Major, tag CISA_KEV, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_02, reviewed_at 2023_10_06;
    target:src_ip;
)

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