ET MALWARE Observed VBScript Payload Downloader Inbound

Query · suricata

flow:established,to_client;
http.response_body;
content:"|3d 3d 3d 20|Obfuscated|20|VBScript|20|Payload|20 3d 3d 3d|"; fast_pattern;
content:"|3d 3d 3d 20|Base64|20|Decode|20 26 20|Execute|20 3d 3d 3d|"; distance:0;
content:"Function|20|Base64Decode|28|"; distance:0;
target:dest_ip;
Raw source ET MALWARE Observed VBScript Payload Downloader Inbound · Suricata
Esc
Published by Emerging Threats Open ↗, licensed under BSD 3-Clause ↗. Line breaks added for readability; the rule is otherwise unchanged. 
alert http $EXTERNAL_NET any -> $HOME_NET any (
    msg:"ET MALWARE Observed VBScript Payload Downloader Inbound";
    flow:established,to_client;
    http.response_body;
    content:"|3d 3d 3d 20|Obfuscated|20|VBScript|20|Payload|20 3d 3d 3d|"; fast_pattern;
    content:"|3d 3d 3d 20|Base64|20|Decode|20 26 20|Execute|20 3d 3d 3d|"; distance:0;
    content:"Function|20|Base64Decode|28|"; distance:0;
    reference:md5,b24d144f391593cc76cc7cf14449c943;
    reference:md5,8f72a20b9e69ac927a8cb136b4d92245;
    classtype:trojan-activity;
    sid:2065641; rev:1;
    metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, tls_state plaintext, created_at 2025_11_04, deployment Perimeter, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2025_11_04, mitre_tactic_id TA0011, mitre_tactic_name Command_And_Control, mitre_technique_id T1105, mitre_technique_name Ingress_Tool_Transfer;
    target:dest_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.