Rule History

alert http $EXTERNAL_NET any -> $HOME_NET any (msg:"ET MALWARE Win32/MarioLoader Login Panel"; flow:established,to_client; http.stat_code; content:"200"; file.data; content:"<script>"; content:"THIS SCRIPT REQUIRED FOR PREVENT FLICKERING IN SOME BROWSERS"; distance:0; nocase; content:"localStorage|2e|getItem|28 22 5f|x|5f|darkMode|5f|on|22 29 20 3d 3d 3d 20 22|true|22 20 26 26 20|document|2e|documentElement|2e|classList|2e|add|28 22|dark|22 29 3b|"; distance:0; fast_pattern; content:"</script>"; content:"WELCOME BACK"; distance:0; nocase; content:"Please sign in to continue"; distance:0; nocase; content:"Username:"; distance:0; nocase; content:"Password:"; distance:0; nocase; content:"Remember me"; distance:0; nocase; content:"Sign In"; distance:0; nocase; reference:url,twitter.com/ViriBack/status/1769336570459386268; classtype:trojan-activity; sid:2052284; rev:1; metadata:attack_target Client_Endpoint, tls_state TLSDecrypt, created_at 2024_04_29, deployment Perimeter, deployment SSLDecrypt, malware_family MarioLoader, confidence Medium, signature_severity Major, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2024_04_29;)