Dridex | Threat Level: critical | Type: Banking Trojan

Cryptographic Identifiers

SHA256defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd
MD532cf28db14032003866f66e7d7af29a8
File Typexlsx
Size63.0 KB
First Seen2021-11-21
File NameTermination letter-30471.xlsb
TagsDridex, INVOICE, 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: defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd
  • MD5: 32cf28db14032003866f66e7d7af29a8

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: defb45f39a49d579"
        threat_level = "critical"
        first_seen = "2021-11-21"
    condition:
        hash.sha256(0, filesize) == "defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd"
}

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 defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd # MD5 32cf28db14032003866f66e7d7af29a8
TypeValueNote
sha256 defb45f39a49d579947f0f7a8c3f4eef1bdd4c77947a4e7e48ab66ccf279e9bd Sample:Dridex
md5 32cf28db14032003866f66e7d7af29a8 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