REvil | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA25674320a6921912c89e7e2e0f44e1192926b226f5b70a580c0a36c6e1c8b8dd0fe
MD5de8a18a1e639dbf581a4082f0c2f9afa
File Typedll
Size116.5 KB
First Seen2020-09-14
File NamebC5mBDTd.exe
Tagsexe, REvil, Sodinokibi

Malware Family: REvil

REvil, RaaS'tır.

TypeRansomware
Programming LanguageC
Target PlatformWindows
C2 ProtocolHTTP
PurposeRaaS
First Seen Year2019
AliasesSodinokibi

Threat Indicators (IOC)

  • SHA256: 74320a6921912c89e7e2e0f44e1192926b226f5b70a580c0a36c6e1c8b8dd0fe
  • MD5: de8a18a1e639dbf581a4082f0c2f9afa

You can verify all hash values of this sample on VirusTotal.

System Cleanup Guide

  1. Sistemi ağdan DERHAL ayırın — diğer cihazlara yayılmayı durdurun
  2. Do not pay the ransom — there is no guarantee your files will be restored
  3. Quarantine the affected drives
  4. Kullanılan fidye yazılımı ailesini belirleyin (nomoreransom.org)
  5. Try available decryptor tools (the NoMoreRansom project)
  6. Report the incident to the authorities (cybercrime unit)
  7. Temiz bir yedekten kurtarın; yedeğiniz yoksa sürücüyü saklayın

YARA Rule Hints

rule REvil_SHA256 {
    meta:
        description = "REvil sample: 74320a6921912c89"
        threat_level = "critical"
        first_seen = "2020-09-14"
    condition:
        hash.sha256(0, filesize) == "74320a6921912c89e7e2e0f44e1192926b226f5b70a580c0a36c6e1c8b8dd0fe"
}

REvil — Malware Profile

REvil/Sodinokibi ransomware. nboehret developer. SP-API project. siliconplains.net C2. Downloader v1.4.

Malware Type
Ransomware
Programming Language
C
C2 Protocol
HTTP
Target Systems
Windows
Also Known As (AKA)
Sodinokibi

Technical Details

REvil (Sodinokibi) is a ransomware-as-a-service operated by GOLD SOUTHFIELD. First detected April 2019, believed successor to GandCrab. Uses elliptic curve Diffie-Hellman (ECDH) + Salsa20 for file encryption, RSA-2048 for key exchange. Highly customizable through embedded JSON configuration: target paths, excluded countries/extensions. Notable attacks: Kaseya VSA supply chain attack (July 2021, 1500+ MSPs affected), JBS Foods ($11M ransom), Travelex ($6M ransom). Double extortion via "Happy Blog" leak site. Source code leaked 2021. FSB arrested key members January 2022. Operations resumed briefly with "REvil is back" announcements.

Attribution / Threat Actor

GOLD SOUTHFIELD, GandCrab successor

Capabilities & Behavior

Dosya Şifreleme (AES/RSA)
Gölge Kopya Silme
Yedek Kaldırma
Fidye Notu Oluşturma
Kalıcılık Sağlama
Ağ Paylaşımı Şifreleme
Anti-Analiz Teknikleri
Çift Gasp (Data Leak)

IOC List (2 indicators)

IOC — REvil
# SHA256 74320a6921912c89e7e2e0f44e1192926b226f5b70a580c0a36c6e1c8b8dd0fe # MD5 de8a18a1e639dbf581a4082f0c2f9afa
TypeValueNote
sha256 74320a6921912c89e7e2e0f44e1192926b226f5b70a580c0a36c6e1c8b8dd0fe Sample:REvil
md5 de8a18a1e639dbf581a4082f0c2f9afa Sample:REvil
Tags
revilransomwaremalwarecriticalsha256hash-analizi