NjRAT Bladabindi - Manuel Statische Analyse (c559ae35) | Yuksek Tehdit

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

Datei Kimligi

SHA256	`c559ae3589ef6275ab17974827435d17215a4f81b35da976a98299021addcc93`
Orijinal Ad	440b4ef096504461be38b21b0ec74e57.exe
Install Adi	WindowsServices.exe
Größe	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	Wert
Registry Run Key	`HKCU\Software\Microsoft\Windows\CurrentVersion\Run\WindowsServices`
Dropped Datei	`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
Datei 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-Profil

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

Malware-Typ

RAT

Programmiersprache

VB.NET

C2-Protokoll

TCP (varsayilan port 1177)

Zielsysteme

Windows

Auch bekannt als (AKA)

Bladabindi, H-Worm, houdini

Technische 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 / Bedrohungsakteur

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

Fähigkeiten & Verhalten

Uzaktan Erişim & Kontrol

Keylogger

Ekran Görüntüsü

Webcam Erişimi

Dosya Yönetimi

Süreç Yönetimi

Komut Yürütme

Kalıcılık Mekanizması

IOC-Liste (6 Indikatoren)

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

Typ	Wert	Bemerkung
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 — Zum vollständigen Profil →

C2-Server (8 erfasste Server für diese Familie)

Adresse	Typ	Port	Protokoll	Status	Land
microsoft.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
comodoca.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—
comodoca.com	domain	—	TCP	active	—
microsoft.com	domain	—	TCP	active	—

C2-Adressen stammen ausschließlich aus vom KEYDAL-Team manuell verifizierten Malware-Samples. Kommerzielle Nutzung ist untersagt.