NjRAT Bladabindi - Manuel Static Analysis (c559ae35) | Yuksek Tehdit

Manuel Statik Analiz (LLM Okumali) — NjRAT / Bladabindi | Tehdit: HIGH

Dosya Kimligi

SHA256	`c559ae3589ef6275ab17974827435d17215a4f81b35da976a98299021addcc93`
Orijinal Ad	440b4ef096504461be38b21b0ec74e57.exe
Install Adi	WindowsServices.exe
Boyut	32.256 byte
Dil	VB.NET (.NET Framework 2.0)
Packer	Yok (normal entropi: 5.61)

C2 Sunucusu & Ag Iletisimi

Adres	Tip	Protokol	Tespit Yontemi
`jun88.now`	DDNS Domain	TCP	Strings — gomunlu konfigurasyon

Baglanti Anahtari (Key/ID): f217d66ad40ee1c58064dc08d8ad14a8

NjRAT varsayilan portlari: 1177, 5552, 7777

Persistence (Kalicilik)

Yontem	Deger
Registry Run Key	`HKCU\Software\Microsoft\Windows\CurrentVersion\Run\WindowsServices`
Dropped Dosya	`C:\Users\[USER]\AppData\Roaming\WindowsServices.exe`
Firewall Bypass	`netsh firewall add allowedprogram ... ENABLE`

Yetenekler

Keylogger — GetAsyncKeyState, GetKeyboardLayout, GetKeyboardState, MapVirtualKey, ToUnicodeEx
Screenshot / Ekran Goruntuleme — CopyFromScreen, Bitmap, Graphics, PixelFormat
Webcam Yakalama — avicap32.dll, capGetDriverDescriptionA, capCreateCaptureWindow
USB Yayilimi — USB_SP modulu, GetLogicalDrives
Uzaktan Komut Calistirma — Shell, Execute, cmd.exe
Dosya Yoneticisi — ReadAllBytes, WriteAllBytes, Download, FileStream
AV Tespiti — Select * From AntiVirusProduct (WMI SecurityCenter2)
Remote Desktop (Uzak Erisim) — TcpClient, NetworkStream, Socket
Process Manager — GetProcessesByName, GetProcessById

Anti-Analiz Teknikleri

Anti-Debug — NtSetInformationProcess (ThreadHideFromDebugger)
VM Tespiti — VBoxService, VGAuthService string kontrolu
Sandbox/Arac Tespiti: procexp, SbieCtrl (Sandboxie), SpyTheSpy, wireshark, apateDNS, IPBlocker, TiGeR-Firewall, smsniff, exeinfoPE, NetSnifferCs, Sandboxie Control, processhacker
Analiz Araci Tespiti: dnSpy, CodeReflect, Reflector, ILSpy (debugger tespit)

String Temelli Bulgular

Kritik Stringler:
  [C2 HOST]   jun88.now
  [INSTALL]   WindowsServices.exe
  [REGISTRY]  Software\Microsoft\Windows\CurrentVersion\Run
  [KEY]       f217d66ad40ee1c58064dc08d8ad14a8
  [B64-1]     Zmx5ODgua3Jk  =>  (decode edilemedi)
  [B64-2]     Y262SUCZ4UJJ  =>  (decode edilemedi)
  [FW-BYPASS] netsh firewall add allowedprogram ... ENABLE
  [DROPPED]   WindowsServices.exe (Stub.exe referansi)
  [AV-QUERY]  Select * From AntiVirusProduct
  [VMCHECK]   VBoxService, VGAuthService
  [DEBUGGER]  dnSpy, ILSpy, processhacker, SbieCtrl

Teknik Ozet

Bu ornek, VB.NET ile yazilmis NjRAT (Bladabindi) ailesi Remote Access Trojan'idir. 32KB boyutuyla kucuk ama kapsamli fonksiyonlara sahip: keylogger, ekran goruntuleme, webcam yakalama, USB yayilimi, dosya yoneticisi, uzaktan komut yurütme. C2 iletisimi TCP uzerinden jun88.now adresine baglaniyor. Registry Run key ile kalicilik sagliyor, netsh firewall ile kendini Windows guvenlik duvarina ekliyor. Analiz araclarina (Sandboxie, ILSpy, Wireshark, x64dbg, processhacker) ve sanallaStirma ortamlarina (VirtualBox, VMware) karsi koruma iceriyor.

NjRAT — Malware Profile

njRAT Bladabindi. Spanish cotizacion lure. get_Panel1 C2 panel. MENA + Latin America targeting.

Malware Type

RAT

Programming Language

VB.NET

C2 Protocol

TCP (varsayilan port 1177)

Target Systems

Windows

Also Known As (AKA)

Bladabindi, H-Worm, houdini

Technical Details

TCP port 1177 (varsayilan), XOR tabanlı iletisim sifreleme, .NET Framework 2.0+, Mutex: {GUID}, Registry Run key persistence, Keylogger (GetAsyncKeyState), clipboard monitor, screenshot, remote shell, remote camera

Attribution / Threat Actor

Arap dilli siber suc topluluklari, en cok MENA (Orta Dogu ve Kuzey Afrika) bolgesindeki gruplar. Yasama savasi donemi Suriyeli gruplar tarafindan da kullanilmistir.

Capabilities & Behavior

Uzaktan Erişim & Kontrol

Keylogger

Ekran Görüntüsü

Webcam Erişimi

Dosya Yönetimi

Süreç Yönetimi

Komut Yürütme

Kalıcılık Mekanizması

IOC List (6 indicators)

IOC — NjRAT

# SHA256
c559ae3589ef6275ab17974827435d17215a4f81b35da976a98299021addcc93

# MD5
440b4ef096504461be38b21b0ec74e57

# DOMAIN
jun88.now

# DOMAIN
fly88.krd

# REGISTRY
HKCU\Software\Microsoft\Windows\CurrentVersion\Run

# FILEPATH
C:\Users\AppData\Roaming\WindowsServices.exe

Type	Value	Note
sha256	c559ae3589ef6275ab17974827435d17215a4f81b35da976a98299021addcc93
md5	440b4ef096504461be38b21b0ec74e57
domain	jun88.now
domain	fly88.krd
registry	HKCU\Software\Microsoft\Windows\CurrentVersion\Run
filepath	C:\Users\AppData\Roaming\WindowsServices.exe

NjRAT — Go to Full Profile →

C2 Servers (8 recorded servers for this family)

Address	Type	Port	Protocol	Status	Country
system.io	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—
system.io	domain	—	TCP	active	—

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