ET MALWARE JanelaRAT CnC Checkin Observed

alert http $HOME_NET any -> $EXTERNAL_NET any (
    msg:"ET MALWARE JanelaRAT CnC Checkin Observed";
    flow:established,to_server;
    http.method;
    content:"GET";
    http.uri;
    content:"?op=";
    pcre:"/^\d\x7c\d\x7c\d\x7c\d/R";
    content:"&us=";
    content:"&nm=";
    content:"&vs=";
    http.user_agent;
    content:"VisaoAPP"; fast_pattern;
    http.header_names;
    content:"|0d 0a|User-Agent|0d 0a|Host|0d 0a|Connection|0d 0a 0d 0a|";
    reference:url,www.zscaler.com/blogs/security-research/janelarat-repurposed-bx-rat-variant-targeting-latam-fintech;
    classtype:trojan-activity;
    sid:2047646; rev:4;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_08_14, deployment Perimeter, former_category RETIRED, malware_family JanelaRAT, performance_impact Low, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_06_03, reviewed_at 2024_10_01;
    target:src_ip;
)