alert tcp $HOME_NET any -> $EXTERNAL_NET 1024: (msg:"ET MALWARE Win32/HunterStealer/AlfonsoStealer/PhoenixStealer CnC Exfil"; flow:established,to_server; content:"|50 4b 03 04 14 00|"; depth:6; content:"Desktop.png"; distance:0; fast_pattern; reference:md5,20f025a45247cc0289e666057149c28e; reference:md5,7f053ba33d6e4bf07a15ee65dd2b0d92; reference:url,twitter.com/3xp0rtblog/status/1455134317710090248; reference:md5,490f0cff27a1cff0aead0ca3864e15d6; classtype:command-and-control; sid:2031198; rev:1; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2020_11_11, deployment Perimeter, malware_family HunterStealer, malware_family AlfonsoStealer, malware_family PhoenixStealer, confidence Medium, signature_severity Major, updated_at 2020_11_11;)