WannaCry | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA25675a5fb51e76d9f1a69a7c3301922cb84a08b53c0d29b23d4adaab60db414dce9
MD5c282a4695a56d6bd1314d4c57fc21f6e
File Typeexe
Size5174.0 KB
First Seen2026-05-21
File Name75a5fb51e76d9f1a69a7c3301922cb84a08b53c0d29b23d4adaab60db414dce9
Tagsdionaea, exe, WannaCry

Malware Family: WannaCry

WannaCry, 200K+ sistemi etkiledi.

TypeRansomware
Programming LanguageC
Target PlatformWindows
C2 Protocol
PurposeKüresel SMB saldırısı
First Seen Year2017
AliasesWannaCrypt

Threat Indicators (IOC)

  • SHA256: 75a5fb51e76d9f1a69a7c3301922cb84a08b53c0d29b23d4adaab60db414dce9
  • MD5: c282a4695a56d6bd1314d4c57fc21f6e

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: 75a5fb51e76d9f1a"
        threat_level = "critical"
        first_seen = "2026-05-21"
    condition:
        hash.sha256(0, filesize) == "75a5fb51e76d9f1a69a7c3301922cb84a08b53c0d29b23d4adaab60db414dce9"
}

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 75a5fb51e76d9f1a69a7c3301922cb84a08b53c0d29b23d4adaab60db414dce9 # MD5 c282a4695a56d6bd1314d4c57fc21f6e
TypeValueNote
sha256 75a5fb51e76d9f1a69a7c3301922cb84a08b53c0d29b23d4adaab60db414dce9 Sample:WannaCry
md5 c282a4695a56d6bd1314d4c57fc21f6e 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