ET POLICY Command Shell Activity Using Comspec Environmental Variable Over SMB - Very Likely Lateral Movement

Query · suricata

flow:established,to_server;
content:"SMB"; depth:8;
content:"|00|%|00|c|00|o|00|m|00|s|00|p|00|e|00|c|00|"; nocase; distance:0;
Raw source ET POLICY Command Shell Activity Using Comspec Environmental Variable Over SMB - Very Likely Lateral Movement · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp any any -> $HOME_NET 445 (
    msg:"ET POLICY Command Shell Activity Using Comspec Environmental Variable Over SMB - Very Likely Lateral Movement";
    flow:established,to_server;
    content:"SMB"; depth:8;
    content:"|00|%|00|c|00|o|00|m|00|s|00|p|00|e|00|c|00|"; nocase; distance:0;
    classtype:bad-unknown;
    sid:2027179; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_04_10, deployment Internal, confidence High, signature_severity Minor, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2019_07_26;
)

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