ET MALWARE Win32/Ispen BADNEWS CnC Beacon

Query · suricata

flow:established,to_server;
http.uri;
content:".php"; endswith;
http.header;
content:"Windows NT";
http.accept;
content:"application/x-www-form-urlencoded"; fast_pattern; bsize:33;
http.content_type;
content:"application/x-www-form-urlencoded"; bsize:33;
http.header_names;
content:!"Referer|0d 0a|";
Raw source ET MALWARE Win32/Ispen BADNEWS CnC Beacon · 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 MALWARE Win32/Ispen BADNEWS CnC Beacon";
    flow:established,to_server;
    http.uri;
    content:".php"; endswith;
    http.header;
    content:"Windows NT";
    http.accept;
    content:"application/x-www-form-urlencoded"; fast_pattern; bsize:33;
    http.content_type;
    content:"application/x-www-form-urlencoded"; bsize:33;
    http.header_names;
    content:!"Referer|0d 0a|";
    reference:md5,570ea00465a45bf7b4e7e0b7007b87a1;
    reference:md5,f974bb8a5b5220a061cb92a16fc6a1c6;
    reference:url,unit42.paloaltonetworks.com/unit42-patchwork-continues-deliver-badnews-indian-subcontinent/;
    classtype:targeted-activity;
    sid:2030357; rev:4;
    metadata:attack_target Client_Endpoint, created_at 2016_06_03, deployment Perimeter, malware_family Win32_Ispen, signature_severity Major, tag c2, updated_at 2020_08_03, mitre_tactic_id TA0010, mitre_tactic_name Exfiltration, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
)

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