REvil | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA25602a526d298e49da19220022a71e31434183e520c2845c6f3eb23169602f0ed63
MD52c41a129aa6afe4aa7d0d5320d9d241d
File Typeexe
Size472.0 KB
First Seen2021-09-30
File Namedownloader.exe
Tags1.4, Decryptor, exe, REvil, Sodinokibi

Malware Family: REvil

REvil, RaaS'tır.

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

Threat Indicators (IOC)

  • SHA256: 02a526d298e49da19220022a71e31434183e520c2845c6f3eb23169602f0ed63
  • MD5: 2c41a129aa6afe4aa7d0d5320d9d241d

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: 02a526d298e49da1"
        threat_level = "critical"
        first_seen = "2021-09-30"
    condition:
        hash.sha256(0, filesize) == "02a526d298e49da19220022a71e31434183e520c2845c6f3eb23169602f0ed63"
}

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 02a526d298e49da19220022a71e31434183e520c2845c6f3eb23169602f0ed63 # MD5 2c41a129aa6afe4aa7d0d5320d9d241d
TypeValueNote
sha256 02a526d298e49da19220022a71e31434183e520c2845c6f3eb23169602f0ed63 Sample:REvil
md5 2c41a129aa6afe4aa7d0d5320d9d241d Sample:REvil
Tags
revilransomwaremalwarecriticalsha256hash-analizi