ET MALWARE Win32/Pteranodon CnC Exfil (POST) M2

Query · suricata

flow:established,to_server;
http.method;
content:"POST";
http.header_names;
content:!"Referer";
http.request_body;
content:"username="; startswith;
content:"_"; within:255;
content:"&cart=FV&"; fast_pattern; distance:0;
content:"-"; within:12;
content:"="; within:12;
pcre:"/^\d+$/R";
Raw source ET MALWARE Win32/Pteranodon CnC Exfil (POST) 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/Pteranodon CnC Exfil (POST) M2";
    flow:established,to_server;
    http.method;
    content:"POST";
    http.header_names;
    content:!"Referer";
    http.request_body;
    content:"username="; startswith;
    content:"_"; within:255;
    content:"&cart=FV&"; fast_pattern; distance:0;
    content:"-"; within:12;
    content:"="; within:12;
    pcre:"/^\d+$/R";
    reference:url,unit42.paloaltonetworks.com/gamaredon-primitive-bear-ukraine-update-2021;
    reference:md5,b5120dcc0f2682cb6fb2a4f68dcbbb0b;
    classtype:trojan-activity;
    sid:2035119; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2022_02_07, deployment Perimeter, malware_family Win32_Pteranodon, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_07, reviewed_at 2024_06_26;
)

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