ET MALWARE MalDoc Exfil (2019-12-12)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/info1.php?id=ZG9jdW1lbnRfbmFtZTp"; fast_pattern;
http.header_names;
content:!"Referer";
Raw source ET MALWARE MalDoc Exfil (2019-12-12) · 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 MalDoc Exfil (2019-12-12)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/info1.php?id=ZG9jdW1lbnRfbmFtZTp"; fast_pattern;
    http.header_names;
    content:!"Referer";
    reference:url,twitter.com/D3LabIT/status/1205066800054128641;
    reference:md5,649c2d11a4a58f0101ed016c73355e32;
    classtype:command-and-control;
    sid:2029142; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_12_12, deployment Perimeter, malware_family Maldoc, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_12_12;
)

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