Versions (5)
Version DetailsCurrent
Rev: 1 • Aug 25, 2023, 12:00 PMET MALWARE ReverseLoader Reverse Base64 Encoded Executable In Image M1
alert tcp-pkt $EXTERNAL_NET $HTTP_PORTS -> $HOME_NET any (msg:"ET MALWARE ReverseLoader Reverse Base64 Encoded Executable In Image M1"; flow:established,to_client; content:"AAAAEAAAAMAAQqVT|3c 3c|BASE64|5f|END|3e 3e|"; isdataat:!1,relative; 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:2047749; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2023_08_25, deployment Perimeter, malware_family ReverseLoader, confidence High, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2023_08_25, reviewed_at 2023_08_25;)
Aug 25, 2023, 12:00 PM
Aug 25, 2023, 12:00 PM
Sep 21, 2024, 3:00 AM
Aug 19, 2025, 9:35 PM
rules/emerging-malware.rules