ET MALWARE Unk.PSAttack Activity

Query · suricata

flow:established,to_server;
http.method;
content:"GET";
http.uri;
content:"/powershell_attack.txt"; endswith; fast_pattern;
http.header_names;
content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
Raw source ET MALWARE Unk.PSAttack Activity · 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 Unk.PSAttack Activity";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/powershell_attack.txt"; endswith; fast_pattern;
    http.header_names;
    content:"|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|"; bsize:22;
    reference:md5,f9eb044f8b537aa5d9164b1784d618a2;
    classtype:trojan-activity;
    sid:2032793; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_04_21, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_01_25, reviewed_at 2024_03_06;
)

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