ET MALWARE [Fireeye] Backdoor.SUNBURST HTTP Request to avsvmcloud .com

Query · suricata

flow:established,to_server;
http.host;
content:".appsync-api."; dotprefix;
content:".avsvmcloud.com"; endswith;
Raw source ET MALWARE [Fireeye] Backdoor.SUNBURST HTTP Request to avsvmcloud .com · 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 [Fireeye] Backdoor.SUNBURST HTTP Request to avsvmcloud .com";
    flow:established,to_server;
    http.host;
    content:".appsync-api."; dotprefix;
    content:".avsvmcloud.com"; endswith;
    reference:url,www.fireeye.com/blog/threat-research/2020/12/evasive-attacker-leverages-solarwinds-supply-chain-compromises-with-sunburst-backdoor.html;
    classtype:trojan-activity;
    sid:2031338; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_12_14, deployment Perimeter, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2022_03_24;
)

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