Qakbot3 -- Notesvb.msi MSI Teslimi, CorBindToRuntimeEx CLR Enjeksiyonu, C++ RTTI vbase Destructor | Yüksek

Manuel Statik Analiz — Qakbot | Tehdit: YUKSEK

Dosya Kimliği

SHA256	`a4d2138624f8eebb1540096b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f`
Dosya Adı	Notesvb.msi (sahte not uygulaması MSI yükleyicisi)
Boyut	1.540.096 byte (1.5MB MSI)
String Sayisi	7.716

MSI Teslimi: Notesvb.msi

MSI LOADER:

Notesvb.msi
-- "Notes" = not defteri uygulaması (Microsoft OneNote, Evernote taklidi?)
-- "vb" = VBScript veya Visual Basic bileşeni
-- MSI = Windows Installer → güvenlik yazılımları genellikle taramaz
-- msiexec.exe kullanılır: LOLBin (Living Off The Land Binary)

CorBindToRuntimeEx: CLR Hijacking

CLR KAÇIRMA: .NET runtime enjeksiyonu!

CorBindToRuntimeEx (mscoree.dll)
-- CLR = Common Language Runtime (.NET çalışma zamanı)
-- Unmanaged (native C++) process içine .NET runtime yükler
-- Qakbot: native C++ payload → CorBindToRuntimeEx çağrısı:
   1. Hedef process seçilir (explorer.exe, notepad.exe...)
   2. İçine .NET runtime yüklenir
   3. Kötü amaçlı .NET assembly belleğe yüklenir
   4. Process yöneticisinde meşru process görünür

C++ RTTI: vbase Destructor

`vbase destructor'          -- sanal taban sınıf yıkıcısı
`vector deleting destructor' -- vektör silme yıkıcısı
__vectorcall                 -- Microsoft özel çağrı kuralı
-- C++ RTTI (Run-Time Type Information) kalıntıları
-- Qakbot'un native C++ katmanının imzası

IOC

SHA256	`a4d2138624f8eebb1540096b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f`
Loader	Notesvb.msi (MSI)
Teknik	CorBindToRuntimeEx CLR injection

QakBot — Malware Profile

QakBot Quakbot banker. Notesvb.msi delivery. Named pipe IPC. Modular architecture.

Malware Type

Other

Programming Language

C++

C2 Protocol

HTTPS

Target Systems

Windows

Also Known As (AKA)

QBot

Technical Details

QakBot (Qbot/QuakBot) is a banking trojan and loader active since 2007. Features: credential theft, email hijacking for thread hijacking attacks, lateral movement via SMB/psexec, web injection for banking fraud. Delivered via malspam using hijacked email threads (reply-chain attacks). Modules: email collector, credential grabber, network scanner, VNC plugin. Used to deliver Egregor, ProLock, REvil, Black Basta ransomware. FBI "Operation Duck Hunt" disrupted infrastructure August 2023, removing QakBot from 700,000+ infected machines. Attempted comeback Q4 2023 with new delivery methods.

Attribution / Threat Actor

Gold Lagoon, TA570 (Shatak)

Capabilities & Behavior

Zararlı Yazılım Aktivitesi

Kalıcılık Mekanizması

C2 İletişimi

Anti-Analiz

IOC List (1 indicators)

IOC — Qakbot

# SHA256
a4d2138624f8eebb1540096b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f

Type	Value	Note
sha256	a4d2138624f8eebb1540096b3c5a4f7d0e2b6c9f1a3d6e8b1c4f7a0d3e6b9c2f

Qakbot — Go to Full Profile →

C2 Servers (8 recorded servers for this family)

Address	Type	Port	Protocol	Status	Country
95.217.35.154	ip	443	HTTPS	inactive	FI
upd5.pro	domain	443	HTTPS	inactive	—
upd5.pro	domain	443	HTTPS	inactive	—
metasta.me	domain	443	HTTPS	inactive	—
upd5.pro	domain	443	HTTPS	inactive	—
amacey.com	domain	443	HTTPS	inactive	—
181.174.165.208	ip	443	HTTPS	sinkholed	AR
212.117.180.232	ip	443	HTTPS	sinkholed	CH

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