ET MALWARE Suspected Blackmoon Related Activity (GET)

Query · suricata

flow:established,to_server;
flowbits:set,ET.blackmoon;
urilen:<25;
http.method;
content:"GET";
http.uri;
content:"/post/"; startswith;
content:"_"; distance:8; within:1;
http.user_agent;
content:"Mozilla/4.0 (compatible|3b 20|MSIE 9.0|3b 20|Windows NT 6.1)"; bsize:50;
http.host;
content:".lofter.com"; endswith; fast_pattern;
target:src_ip;

Rule dependencies

Feeds into

Raw source ET MALWARE Suspected Blackmoon Related Activity (GET) · Suricata
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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 MALWARE Suspected Blackmoon Related Activity (GET)";
    flow:established,to_server;
    flowbits:set,ET.blackmoon;
    urilen:<25;
    http.method;
    content:"GET";
    http.uri;
    content:"/post/"; startswith;
    content:"_"; distance:8; within:1;
    http.user_agent;
    content:"Mozilla/4.0 (compatible|3b 20|MSIE 9.0|3b 20|Windows NT 6.1)"; bsize:50;
    http.host;
    content:".lofter.com"; endswith; fast_pattern;
    reference:md5,26e28b0d5e50624d2597ae65cdd41dd5;
    reference:md5,f2827328571b9c292a1a3759e94c7b4a;
    reference:md5,53d082f3320b5c6cfd264d1b30298094;
    reference:url,threatpost.com/blackmoon-banking-trojan-using-new-infection-technique/125425/;
    classtype:trojan-activity;
    sid:2046635; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2023_06_23, deployment Perimeter, deployment SSLDecrypt, performance_impact Low, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_06_23;
    target:src_ip;
)

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