ET MALWARE Impersoni-fake-ator backdoor CnC Checkin

Query · suricata

flow:established,to_server;
content:"|d1 57 f4 37|"; startswith; fast_pattern;
content:"|02 00 00 00|"; distance:4;
byte_jump:4,0, relative, little, post_offset -1;
isdataat:!2,relative;
Raw source ET MALWARE Impersoni-fake-ator backdoor CnC Checkin · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert tcp $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE Impersoni-fake-ator backdoor CnC Checkin";
    flow:established,to_server;
    content:"|d1 57 f4 37|"; startswith; fast_pattern;
    content:"|02 00 00 00|"; distance:4;
    byte_jump:4,0, relative, little, post_offset -1;
    isdataat:!2,relative;
    reference:url,www.bitdefender.com/files/News/CaseStudies/study/426/Bitdefender-PR-Whitepaper-BackdoorDiplomacy-creat6507-en-EN.pdf;
    classtype:trojan-activity;
    sid:2042189; rev:2;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_and_Server, created_at 2022_12_07, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_12_13;
)

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