Versions (5)
Version DetailsCurrent
Rev: 1 • Nov 1, 2023, 12:00 PMET MALWARE ReverseLoader Reverse Base64 Encoded Executable In Image M2
alert tcp-pkt $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE ReverseLoader Reverse Base64 Encoded Executable In Image M2"; flow:established,to_client; content:"|3c 3c|BASE64|5f|END"; reference:md5,6c97bdd98e5eb53bd85aafef890673d1; reference:url,twitter.com/Jane_0sint/status/1694972207896699387; reference:url,cyble.com/blog/threat-actor-employs-powershell-backed-steganography-in-recent-spam-campaigns; classtype:trojan-activity; sid:2049038; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_11_01, deployment Perimeter, deployment SSLDecrypt, malware_family ReverseLoader, confidence High, signature_severity Critical, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_12_08, reviewed_at 2023_11_01;)
Nov 1, 2023, 12:00 PM
Dec 8, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 18, 2025, 8:35 PM
rules/emerging-malware.rules