ET MALWARE Observed Spoofed WindowsPowerShell User-Agent

Query · suricata

flow:established,to_server;
http.user_agent; bsize:10;
content:"PowerShell";
target:src_ip;
Raw source ET MALWARE Observed Spoofed WindowsPowerShell User-Agent · 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 Observed Spoofed WindowsPowerShell User-Agent";
    flow:established,to_server;
    http.user_agent; bsize:10;
    content:"PowerShell";
    classtype:trojan-activity;
    sid:2064010; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2025_08_14, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_08_14, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1071, mitre_technique_name Application_Layer_Protocol;
    target:src_ip;
)

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