Dridex | Threat Level: critical | Type: Banking Trojan

Cryptographic Identifiers

SHA256efcaf7364573f2064721587d5ccfa6ceea6f89b1963c7f2e09ba20514431dcb7
MD54b4e0da78d069ad63be8a2bd0756b7ac
File Typexlsx
Size72.3 KB
First Seen2021-11-24
File Nametax77567960.xlsb
TagsDridex, 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: efcaf7364573f2064721587d5ccfa6ceea6f89b1963c7f2e09ba20514431dcb7
  • MD5: 4b4e0da78d069ad63be8a2bd0756b7ac

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: efcaf7364573f206"
        threat_level = "critical"
        first_seen = "2021-11-24"
    condition:
        hash.sha256(0, filesize) == "efcaf7364573f2064721587d5ccfa6ceea6f89b1963c7f2e09ba20514431dcb7"
}

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 efcaf7364573f2064721587d5ccfa6ceea6f89b1963c7f2e09ba20514431dcb7 # MD5 4b4e0da78d069ad63be8a2bd0756b7ac
TypeValueNote
sha256 efcaf7364573f2064721587d5ccfa6ceea6f89b1963c7f2e09ba20514431dcb7 Sample:Dridex
md5 4b4e0da78d069ad63be8a2bd0756b7ac 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