WannaCry | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256b3be7cf75ded8a3dec4a78a9dcf32ff433ac5fa5743d5c27b77dd67f9d6a427b
MD5d2e6347bdee37c922cfeed0e2c5c27c6
File Typeexe
Size2817.0 KB
First Seen2023-02-23
File Name2023-02-21_d2e6347bdee37c922cfeed0e2c5c27c6_neshta_wannacry
TagsWannaCry

Malware Family: WannaCry

WannaCry, küresel saldırıdır.

TypeRansomware
Programming LanguageC
Target PlatformWindows
C2 Protocol
PurposeSMB ransomware
First Seen Year2017
AliasesWannaCrypt

Threat Indicators (IOC)

  • SHA256: b3be7cf75ded8a3dec4a78a9dcf32ff433ac5fa5743d5c27b77dd67f9d6a427b
  • MD5: d2e6347bdee37c922cfeed0e2c5c27c6

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 WannaCry_SHA256 {
    meta:
        description = "WannaCry sample: b3be7cf75ded8a3d"
        threat_level = "critical"
        first_seen = "2023-02-23"
    condition:
        hash.sha256(0, filesize) == "b3be7cf75ded8a3dec4a78a9dcf32ff433ac5fa5743d5c27b77dd67f9d6a427b"
}

WannaCry — Malware Profile

WannaCry EternalBlue SMB ransomware. 2017 NSA açık. RSA public key hardcoded. ChangeServiceConfig2A servis kalıcılığı. 150+ ülke.

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

Technical Details

EternalBlue SMB exploit (CVE-2017-0144), DoublePulsar backdoor, kill-switch domain (registrasyonla durduruldu), RSA-2048 + AES-128-CBC sifreleme, .WNCRY dosya uzantisi, Tor C2

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 — WannaCry
# SHA256 b3be7cf75ded8a3dec4a78a9dcf32ff433ac5fa5743d5c27b77dd67f9d6a427b # MD5 d2e6347bdee37c922cfeed0e2c5c27c6
TypeValueNote
sha256 b3be7cf75ded8a3dec4a78a9dcf32ff433ac5fa5743d5c27b77dd67f9d6a427b Sample:WannaCry
md5 d2e6347bdee37c922cfeed0e2c5c27c6 Sample:WannaCry

C2 Servers (3 recorded servers for this family)

Address Type Port Protocol Status Country
iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com domain 80 TCP sinkholed —
www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwea.com domain 443 TCP sinkholed —
www.iuqerfsodp9ifjaposdfjhgosurijfaewrwergwff.com domain 443 TCP sinkholed —

C2 addresses are provided only from malware samples manually verified by the KEYDAL team. Commercial use is prohibited.

Tags
wannacryransomwaremalwarecriticalsha256hash-analizi