WannaCry | Threat Level: critical | Type: Ransomware

Cryptographic Identifiers

SHA256d103b20fa13c87e498887db5bc54d0a69829bdbe54772e9ea621a9902122125d
MD527e65e2ed2b8c532d2fdafbf923b9a68
File Typeexe
Size2996.0 KB
First Seen2023-05-20
File NameWannaCrydemo.exe
TagsWannaCry

Malware Family: WannaCry

WannaCry, küresel saldırıdır.

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

Threat Indicators (IOC)

  • SHA256: d103b20fa13c87e498887db5bc54d0a69829bdbe54772e9ea621a9902122125d
  • MD5: 27e65e2ed2b8c532d2fdafbf923b9a68

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: d103b20fa13c87e4"
        threat_level = "critical"
        first_seen = "2023-05-20"
    condition:
        hash.sha256(0, filesize) == "d103b20fa13c87e498887db5bc54d0a69829bdbe54772e9ea621a9902122125d"
}

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 d103b20fa13c87e498887db5bc54d0a69829bdbe54772e9ea621a9902122125d # MD5 27e65e2ed2b8c532d2fdafbf923b9a68
TypeValueNote
sha256 d103b20fa13c87e498887db5bc54d0a69829bdbe54772e9ea621a9902122125d Sample:WannaCry
md5 27e65e2ed2b8c532d2fdafbf923b9a68 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