ET MALWARE CHERRYSPY.Backdoor Russia APT28 Initial Key Exchange

Query · suricata

flow:established,to_server;
flowbits:set,ET.CherrySpy.Backdoor.KeyExchange;
http.method;
content:"POST";
http.request_body;
content:"|7b|"; startswith;
content:"|22|USR_KAF|22 3A|"; fast_pattern;
content:"|22|USR_CRC|22 3A|";
content:"|22|USR_PUB|22 3A|";
content:"|7d|"; endswith;
target:src_ip;

Rule dependencies

Feeds into

  • 1 rule read ET.CherrySpy.Backdoor.KeyExchange · view all
Raw source ET MALWARE CHERRYSPY.Backdoor Russia APT28 Initial Key Exchange · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE CHERRYSPY.Backdoor Russia APT28 Initial Key Exchange";
    flow:established,to_server;
    flowbits:set,ET.CherrySpy.Backdoor.KeyExchange;
    http.method;
    content:"POST";
    http.request_body;
    content:"|7b|"; startswith;
    content:"|22|USR_KAF|22 3A|"; fast_pattern;
    content:"|22|USR_CRC|22 3A|";
    content:"|22|USR_PUB|22 3A|";
    content:"|7d|"; endswith;
    reference:url,go.recordedfuture.com/hubfs/reports/CTA-RU-2024-1121.pdf;
    reference:url,cert.gov.ua/article/4697016;
    classtype:trojan-activity;
    sid:2062546; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_and_Server, tls_state plaintext, created_at 2025_05_22, deployment Perimeter, malware_family CHERRYSPY, performance_impact Low, confidence High, signature_severity Major, tag APT28, updated_at 2025_05_22, mitre_tactic_id TA0037, mitre_tactic_name Command_And_Control, mitre_technique_id T1041, mitre_technique_name Exfiltration_Over_C2_Channel;
    target:src_ip;
)

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