Versions (4)
Version DetailsCurrent
Rev: 2 • May 19, 2021, 12:00 PMET MALWARE NightfallGT Discord Nitro Ransomware
alert http $HOME_NET any -> $EXTERNAL_NET any (msg:"ET MALWARE NightfallGT Discord Nitro Ransomware"; flow:established,to_server; http.request_line; content:"POST /api/webhooks/"; startswith; http.host; content:"discord.com"; http.request_body; content:"**Program executed**"; fast_pattern; content:"Status|3a 20|Active|20|"; distance:0; content:"PC|20|Name|3a 20|"; distance:0; content:"IP|20|Address|3a 20|"; distance:0; reference:md5,0adc114f1b8ed3336d73d4d0521c39f5; reference:url,github.com/NightfallGT/Nitro-Ransomware; classtype:command-and-control; sid:2033000; rev:2; metadata:affected_product Windows_XP_Vista_7_8_10_Server_32_64_Bit, attack_target Client_Endpoint, created_at 2021_05_19, deployment Perimeter, deployment SSLDecrypt, confidence High, signature_severity Major, tag Ransomware, tag Description_Generated_By_Proofpoint_Nexus, updated_at 2021_05_19, mitre_tactic_id TA0040, mitre_tactic_name Impact, mitre_technique_id T1486, mitre_technique_name Data_Encrypted_for_Impact;)
May 19, 2021, 12:00 PM
May 19, 2021, 12:00 PM
Sep 21, 2024, 3:00 AM
Sep 11, 2025, 9:34 PM
rules/emerging-malware.rules