Versions (4)
Version DetailsCurrent
Rev: 3 • Mar 30, 2021, 12:00 PMET MALWARE GCleaner Downloader Activity M3
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE GCleaner Downloader Activity M3"; flow:established,to_server; http.method; content:"GET"; http.uri; content:".php?pub=mix"; http.content_type; content:"application/x-www-form-urlencoded"; bsize:33; http.user_agent; content:"HALF"; bsize:4; fast_pattern; reference:md5,ff4ae9d00058d3e9d5034d043387c4be; reference:url,medium.com/csis-techblog/gcleaner-garbage-provider-since-2019-2708e7c87a8a; classtype:trojan-activity; sid:2032351; rev:3; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_03_30, deployment Perimeter, malware_family GCleaner, performance_impact Low, confidence High, signature_severity Major, tag Downloader, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_08_31;)
Mar 30, 2021, 12:00 PM
Aug 31, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 12, 2025, 9:34 PM
rules/emerging-malware.rules