ET MALWARE AsyncRAT Installer Payload Request

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"|2e|php|3f|s|3d|";
pcre:"/^\x2f\d\x2ephp\x3fs\x3d[a-zA-Z0-9]{6,10}$/";
http.user_agent;
content:"WindowsPowerShell/"; fast_pattern;
http.host;
content:".top"; endswith;
Raw source ET MALWARE AsyncRAT Installer Payload Request · Suricata
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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 -> $EXTERNAL_NET any (
    msg:"ET MALWARE AsyncRAT Installer Payload Request";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"|2e|php|3f|s|3d|";
    pcre:"/^\x2f\d\x2ephp\x3fs\x3d[a-zA-Z0-9]{6,10}$/";
    http.user_agent;
    content:"WindowsPowerShell/"; fast_pattern;
    http.host;
    content:".top"; endswith;
    reference:url,x.com/Unit42_Intel/status/1760426508558950518;
    reference:md5,0132c264b8515524ed8e8133e4035ab8;
    classtype:command-and-control;
    sid:2060669; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_03_06, deployment Perimeter, malware_family AsyncRAT, confidence High, signature_severity Critical, tag c2, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_03_06, mitre_tactic_id TA0002, mitre_tactic_name Execution, mitre_technique_id T1203, mitre_technique_name Exploitation_For_Client_Execution;
)

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