Versions (4)
Version DetailsCurrent
Rev: 1 • Feb 20, 2023, 12:00 PMET MALWARE Win32/Stealc Requesting browsers Config from C2
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Win32/Stealc Requesting browsers Config from C2"; flow:established,to_server; http.method; content:"POST"; http.uri; content:".php"; endswith; http.request_body; content:"form-data|3b 20|name=|22|token|22|"; content:"form-data|3b 20|name=|22|message|22 0d 0a 0d 0a|browsers|0d 0a|"; fast_pattern; distance:0; flowbits:set,ET.stealc.browsers; reference:url,blog.sekoia.io/stealc-a-copycat-of-vidar-and-raccoon-infostealers-gaining-in-popularity-part-1/; classtype:command-and-control; sid:2044244; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_20, deployment Perimeter, malware_family Stealc, confidence High, signature_severity Major, tag Stealer, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_20;)
Feb 20, 2023, 12:00 PM
Feb 20, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 25, 2025, 9:35 PM
rules/emerging-malware.rules