Dridex | Threat Level: critical | Type: Banking Trojan

Cryptographic Identifiers

SHA256799f5e8dcb7f46faa0b1cfe9a2917539bf3b66a376478eb0270da8d80552e225
MD57dc903831805e19dcfacd1cfa82a9c54
File Typexlsx
Size76.4 KB
First Seen2021-11-21
File NameTermination letter_19992.xlsb
TagsDridex, xlsb, xlsx

Malware Family: Dridex

Dridex, Evil Corp trojanıdır.

TypeBanking Trojan
Programming LanguageC++
Target PlatformWindows
C2 ProtocolHTTPS
PurposeBankacılık trojanı
First Seen Year2012
AliasesBugat

Threat Indicators (IOC)

  • SHA256: 799f5e8dcb7f46faa0b1cfe9a2917539bf3b66a376478eb0270da8d80552e225
  • MD5: 7dc903831805e19dcfacd1cfa82a9c54

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

System Cleanup Guide

  1. Disconnect the system from the network — unplug ethernet, disable Wi-Fi
  2. Terminate suspicious processes from Task Manager
  3. Run a full system scan with Malwarebytes or Kaspersky
  4. HKCU\Software\Microsoft\Windows\CurrentVersion\Run kayıtlarını kontrol edin
  5. Review newly created tasks in Task Scheduler
  6. Change all your account passwords from a clean device
  7. Gerekirse Windows'u yeniden yükleyin ve verilerinizi temiz bir yedeğe geri alın

YARA Rule Hints

rule Dridex_SHA256 {
    meta:
        description = "Dridex sample: 799f5e8dcb7f46fa"
        threat_level = "critical"
        first_seen = "2021-11-21"
    condition:
        hash.sha256(0, filesize) == "799f5e8dcb7f46faa0b1cfe9a2917539bf3b66a376478eb0270da8d80552e225"
}

Dridex — Malware Profile

Dridex Bugat TA505 banking trojan. Chrome/Firefox form hooking with obfuscated strings. DirectUI RTTI.

Malware Type
Other
Programming Language
C++
C2 Protocol
HTTPS
Target Systems
Windows
Also Known As (AKA)
Bugat

Technical Details

Dridex (Bugat/Cridex) is a modular banking trojan operated by TA505/Evil Corp since 2011. Uses peer-to-peer botnet architecture for C2 communication to resist takedowns. Modules: form grabber, VNC backdoor, network proxy, credential stealer, spread module. Encrypted communication: RC4 + custom protocol over HTTP. Delivered via Microsoft Office macro phishing (VBA macros). Used to deliver: BitPaymer, WastedLocker, Grief (PayOrGrief) ransomware. Evil Corp sanctioned by US Treasury October 2019, making ransom payments illegal for US entities. Dridex infrastructure heavily overlaps with Locky ransomware campaigns. Botnet IDs (bot IDs): 220, 444, 7777, multiple active botnets simultaneously.

Attribution / Threat Actor

Evil Corp (TA505), Maksim Yakubets (indicted by FBI)

Capabilities & Behavior

Zararlı Yazılım Aktivitesi
Kalıcılık Mekanizması
C2 İletişimi
Anti-Analiz

IOC List (2 indicators)

IOC — Dridex
# SHA256 799f5e8dcb7f46faa0b1cfe9a2917539bf3b66a376478eb0270da8d80552e225 # MD5 7dc903831805e19dcfacd1cfa82a9c54
TypeValueNote
sha256 799f5e8dcb7f46faa0b1cfe9a2917539bf3b66a376478eb0270da8d80552e225 Sample:Dridex
md5 7dc903831805e19dcfacd1cfa82a9c54 Sample:Dridex

C2 Servers (3 recorded servers for this family)

Address Type Port Protocol Status Country
79.141.164.52 ip 4444 TCP sinkholed RO
185.234.218.151 ip 4444 HTTPS sinkholed RU
77.73.133.84 ip 443 HTTPS sinkholed BG

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

Tags
dridexbanking trojanmalwarecriticalsha256hash-analizi