ET MALWARE Possible FakeAV Binary Download (Security)

Query · suricata

flow:established,to_client;
http.header;
content:"filename=|22|"; nocase;
content:"security"; fast_pattern; nocase; within:50;
content:!"ALLOW-FROM www.onecallnow.com";
pcre:"/filename\x3D\x22[^\r\n]*security[^\n]+\.exe/i";
http.content_type;
content:!"text/xml"; depth:8;
Raw source ET MALWARE Possible FakeAV Binary Download (Security) · 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 Possible FakeAV Binary Download (Security)";
    flow:established,to_client;
    http.header;
    content:"filename=|22|"; nocase;
    content:"security"; fast_pattern; nocase; within:50;
    content:!"ALLOW-FROM www.onecallnow.com";
    pcre:"/filename\x3D\x22[^\r\n]*security[^\n]+\.exe/i";
    http.content_type;
    content:!"text/xml"; depth:8;
    classtype:trojan-activity;
    sid:2012981; rev:7;
    metadata:created_at 2011_06_09, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_11_06;
)

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