ET MALWARE SharpNoPSExec EXE Lateral Movement Tool Downloaded

Query · suricata

flow:established,to_client;
file_data;
content:"MZ"; within:2;
byte_jump:4,58,relative,little;
content:"PE|00 00|"; distance:-64; within:4;
content:"S|00|h|00|a|00|r|00|p|00|N|00|o|00|P|00|S|00|E|00|x|00|e|00|c|00 2e 00|e|00|x|00|e"; distance:0; fast_pattern;
content:"Z|00|Q|00|B|00|j|00|A|00|G|00|g|00|A|00|b|00|w|00|A|00|g|00|A|00|E|00|c|00|A|00|b|00|w|00|B|00|k|00|A|00|C|00|A|00|A|00|Q|00|g|00|B|00|s|00|A|00|G|00|U|00|A|00|c|00|w|00|B|00|z|00|A|00|C|00|A|00|A|00|W|00|Q|00|B|00|v|00|A|00|H|00|U|00|A|00|I|00|Q|00|A|00 3d|"; distance:0;
Raw source ET MALWARE SharpNoPSExec EXE Lateral Movement Tool Downloaded · 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 MALWARE SharpNoPSExec EXE Lateral Movement Tool Downloaded";
    flow:established,to_client;
    file_data;
    content:"MZ"; within:2;
    byte_jump:4,58,relative,little;
    content:"PE|00 00|"; distance:-64; within:4;
    content:"S|00|h|00|a|00|r|00|p|00|N|00|o|00|P|00|S|00|E|00|x|00|e|00|c|00 2e 00|e|00|x|00|e"; distance:0; fast_pattern;
    content:"Z|00|Q|00|B|00|j|00|A|00|G|00|g|00|A|00|b|00|w|00|A|00|g|00|A|00|E|00|c|00|A|00|b|00|w|00|B|00|k|00|A|00|C|00|A|00|A|00|Q|00|g|00|B|00|s|00|A|00|G|00|U|00|A|00|c|00|w|00|B|00|z|00|A|00|C|00|A|00|A|00|W|00|Q|00|B|00|v|00|A|00|H|00|U|00|A|00|I|00|Q|00|A|00 3d|"; distance:0;
    reference:url,github.com/juliourena/SharpNoPSExec/;
    classtype:trojan-activity;
    sid:2032875; rev:2;
    metadata:attack_target Client_Endpoint, created_at 2021_04_27, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_04_27;
)

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