ET MALWARE Win32/PackedFlyStudio.AA CnC Activity (GET)

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
pcre:"/\x2e(?:exe|dll)$/";
http.user_agent;
content:"HTTPREAD"; bsize:8; fast_pattern;
http.host;
pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/";
http.header_names;
content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:37;
Raw source ET MALWARE Win32/PackedFlyStudio.AA CnC Activity (GET) · 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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE Win32/PackedFlyStudio.AA CnC Activity (GET)";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    pcre:"/\x2e(?:exe|dll)$/";
    http.user_agent;
    content:"HTTPREAD"; bsize:8; fast_pattern;
    http.host;
    pcre:"/^(?:[0-9]{1,3}\.){3}[0-9]{1,3}$/";
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Cache-Control|0d 0a 0d 0a|"; bsize:37;
    reference:url,twitter.com/Gi7w0rm/status/1767161955733696771;
    reference:md5,4dd98e7e42415cd8e773bb2a9eda006e;
    classtype:trojan-activity;
    sid:2051640; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_03_13, deployment Perimeter, malware_family Win32_PackedFlyStudio_AA, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_13;
)

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