ET MALWARE APT34 TONEDEAF 2.0 Requesting Commands from CnC

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE APT34 TONEDEAF 2.0 Requesting Commands from CnC";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"/dow?ser="; startswith; fast_pattern;
    pcre:"/^[a-z0-9]{6}$/RUi";
    http.user_agent;
    content:"Windows|20|Phone|20|OS";
    reference:md5,a0324fa4f2d9d2f04ea4edad41160da6;
    classtype:command-and-control;
    sid:2029382; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_02_06, deployment Perimeter, malware_family TONEDEAF, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_02_06;
)