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Rev: 1 • Feb 21, 2023, 12:00 PMET MALWARE Villain C2 Framework CnC Exfil (POST)
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE Villain C2 Framework CnC Exfil (POST)"; flow:to_server,established; http.method; content:"POST"; http.user_agent; content:"WindowsPowerShell/"; http.request_body; content:"|0D 0A 0D 0A 20 20 20 20|Directory|3a 20|C|3a 5c|Users|5c|admin|5c|"; startswith; fast_pattern; content:"|0d 0a|Mode|20 20|"; distance:0; content:"|20 20 20|LastWriteTime|20 20 20 20|"; distance:0; content:"| 20 20|Length|20|Name|20 20|"; distance:0; http.header_names; content:"Authorization"; reference:md5,c08cd421d6f47dcaa2c30395ddf057d8; classtype:trojan-activity; sid:2044260; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_02_21, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_02_21;)
Feb 21, 2023, 12:00 PM
Feb 21, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 25, 2025, 9:35 PM
rules/emerging-malware.rules