ET ATTACK_RESPONSE Interactive Reverse Shell Without TTY (Outbound)

Query · suricata

flow:established,to_server;
pcre:"/^(?:ba)?sh/";
content:"|3a 20|no|20|job|20|control|20|in|20|this|20|shell"; fast_pattern; within:30;
Raw source ET ATTACK_RESPONSE Interactive Reverse Shell Without TTY (Outbound) · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp-pkt $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET ATTACK_RESPONSE Interactive Reverse Shell Without TTY (Outbound)";
    flow:established,to_server;
    pcre:"/^(?:ba)?sh/";
    content:"|3a 20|no|20|job|20|control|20|in|20|this|20|shell"; fast_pattern; within:30;
    reference:url,pentestmonkey.net/blog/post-exploitation-without-a-tty;
    reference:url,www.mandiant.com/resources/blog/unc961-multiverse-financially-motivated;
    classtype:successful-admin;
    sid:2044751; rev:1;
    metadata:affected_product Linux, attack_target Client_Endpoint, created_at 2023_03_23, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_03_23, reviewed_at 2024_01_26;
)

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