ET HUNTING Observed Suspicious Reversed String Inbound (Powershell)

Query · suricata

flow:established,to_client;
http.stat_code;
content:"200";
file.data;
content:"llehSrewoP"; nocase;
Raw source ET HUNTING Observed Suspicious Reversed String Inbound (Powershell) · 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 HUNTING Observed Suspicious Reversed String Inbound (Powershell)";
    flow:established,to_client;
    http.stat_code;
    content:"200";
    file.data;
    content:"llehSrewoP"; nocase;
    classtype:bad-unknown;
    sid:2036350; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_04_25, deployment Perimeter, confidence Medium, signature_severity Informational, updated_at 2022_04_25;
)

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