ET EXPLOIT_KIT Possible PurpleFox EK Framework Payload

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
http.content_type;
content:"image/jpeg"; depth:10; endswith;
http.content_len;
byte_test:0,>,100000,0,string,dec;
file.data;
content:"[Byte[]]$image = 0x4d, 0x5a,|20|"; depth:29; fast_pattern;
pcre:"/^(?:0x[a-f0-9]{1,2}, ){500}/R";
Raw source ET EXPLOIT_KIT Possible PurpleFox EK Framework Payload · 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 -> $HOME_NET any (
    msg:"ET EXPLOIT_KIT Possible PurpleFox EK Framework Payload";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    http.content_type;
    content:"image/jpeg"; depth:10; endswith;
    http.content_len;
    byte_test:0,>,100000,0,string,dec;
    file.data;
    content:"[Byte[]]$image = 0x4d, 0x5a,|20|"; depth:29; fast_pattern;
    pcre:"/^(?:0x[a-f0-9]{1,2}, ){500}/R";
    classtype:exploit-kit;
    sid:2028982; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_11_14, deployment Perimeter, deployment SSLDecrypt, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2020_10_21;
)

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