ET MALWARE MSIL/Revenge-RAT Keep-Alive Activity (Outbound) M2

Query · suricata

flow:established,to_server;
dsize:<50;
content:"keepAlivePing"; startswith;
content:"|40 23 25 5e 4e 59 41 4e 23 21 40 24|"; fast_pattern; endswith;
Raw source ET MALWARE MSIL/Revenge-RAT Keep-Alive Activity (Outbound) M2 · 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 MSIL/Revenge-RAT Keep-Alive Activity (Outbound) M2";
    flow:established,to_server;
    dsize:<50;
    content:"keepAlivePing"; startswith;
    content:"|40 23 25 5e 4e 59 41 4e 23 21 40 24|"; fast_pattern; endswith;
    reference:md5,2d03cfb7357ab919e35546adc9db167a;
    reference:md5,c25b797d6737751936766cd50e26d725;
    reference:url,twitter.com/Srujank48668412/status/1509520095068192780;
    classtype:command-and-control;
    sid:2035885; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_19, deployment Perimeter, malware_family Revenge_RAT, confidence High, signature_severity Major, updated_at 2020_02_19;
)

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