ET HUNTING SUSPICIOUS .LNK File Inside of Zip

Query · suricata

flow:established,from_server;
file_data;
content:"PK|03 04|"; startswith;
content:".lnk"; nocase; fast_pattern; within:500;
Raw source ET HUNTING SUSPICIOUS .LNK File Inside of Zip · 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 SUSPICIOUS .LNK File Inside of Zip";
    flow:established,from_server;
    file_data;
    content:"PK|03 04|"; startswith;
    content:".lnk"; nocase; fast_pattern; within:500;
    classtype:unknown;
    sid:2035026; rev:1;
    metadata:attack_target Client_Endpoint, created_at 2022_02_01, deployment Perimeter, performance_impact Moderate, confidence Medium, signature_severity Informational, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_02_01;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.