ET MALWARE Suspected Agent Racoon Backdoor DNS Related Activity

Query · suricata

dns.query;
content:"xn--"; startswith;
content:".xn--"; distance:5; within:25;
content:".a."; distance:3; within:10; fast_pattern;
pcre:"/^[0-9-a-z]{4}/R";
content:".telemetry."; within:11;
target:src_ip;
Raw source ET MALWARE Suspected Agent Racoon Backdoor DNS Related Activity · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert dns $HOME_NET any -> any any (
    msg:"ET MALWARE Suspected Agent Racoon Backdoor DNS Related Activity";
    dns.query;
    content:"xn--"; startswith;
    content:".xn--"; distance:5; within:25;
    content:".a."; distance:3; within:10; fast_pattern;
    pcre:"/^[0-9-a-z]{4}/R";
    content:".telemetry."; within:11;
    reference:url,unit42.paloaltonetworks.com/new-toolset-targets-middle-east-africa-usa/;
    reference:md5,afd57b72f75da18929be87c0df5c8a5a;
    reference:md5,231867ad872656f37938d23002f8e9e3;
    classtype:trojan-activity;
    sid:2051699; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, affected_product Windows_11, attack_target Client_Endpoint, tls_state plaintext, created_at 2024_03_20, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_03_20;
    target:src_ip;
)

Detection rules belong to the projects that publish them and remain under their own licenses. This site indexes and links to them; it claims no rights in them.