Versions (3)
Version DetailsCurrent
Rev: 5 • May 22, 2019, 12:00 PMET MALWARE GoBrut/StealthWorker Service Bruter CnC Activity
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE GoBrut/StealthWorker Service Bruter CnC Activity"; flow:established,to_server; http.method; content:"GET"; http.uri; content:"/gw?worker="; fast_pattern; http.user_agent; content:"Mozilla/5.0 (X11|3b 20|Ubuntu|3b 20|Linux x"; depth:33; http.accept_enc; content:"gzip"; depth:4; endswith; http.header_names; content:!"Referer"; reference:md5,1b8052d60de7ce8a9d281cf43d8d3091; reference:url,blog.yoroi.company/research/gobrut-a-new-golang-botnet/; reference:url,blog.yoroi.company/research/new-gobrut-version-in-the-wild/; classtype:command-and-control; sid:2033718; rev:5; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2019_05_22, deployment Perimeter, performance_impact Low, confidence High, signature_severity Major, updated_at 2020_09_17, reviewed_at 2024_02_20;)
May 22, 2019, 12:00 PM
Sep 17, 2020, 12:00 PM
Sep 21, 2024, 3:00 AM
May 30, 2025, 12:04 AM
rules/emerging-malware.rules