Archivo Kimligi
| SHA256 | 40079f05ba7cdccac1f62f8e7e1b644bc0a806b58465f5c005725bc54ee73ef1 |
|---|---|
| Tamaño | 514,188 byte PE32 x86, TLS found, 6 section |
| Uretici | BreakingSecurity.net (Remcos resmi satici sitesi) |
RemcosRAT Kimlik Dogrulama
Remcos v[surum] <- surum bilgisi\nRemcos Agent initialized ( <- ajan baslangic mesaji\nRemcos restarted by watchdog! <- watchdog surecu\nBreakingSecurity.net <- resmi Remcos gelistirici/satici sitesi
Yetenekler
KEYLOGGER:\n Keylogger initialization failure: error\n GetAsyncKeyState / SetWindowsHookEx\n\nCLIPBOARD:\n GetClipboardData / EmptyClipboard\n [End of clipboard]\n\nSES YAKALAMA:\n d alias audio <- MCI WinMM ses komutlari\n close audio\n\nSCREENSHOT:\n BitBlt <- ekran goruntulu alma
Process Hollowing (Enjeksiyon)
NtUnmapViewOfSection <- process memory bosalt (process hollowing)\nWriteProcessMemory <- payload yaz\nSetThreadContext <- thread baslangic noktasini degistir\n\n=> Process Hollowing ile mesbru surecler (svchost.exe vb.) icine gizlenir
UAC Atlatma + Persistence
UAC Bypass:\n reg.exe ADD HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System\n /v EnableLUA /t REG_DWORD /d 0 <- UAC tamamen devre disi!\n\nPersistence:\n HKCU\Software\Microsoft\Windows\CurrentVersion\Run\\n Software\Microsoft\Windows\CurrentVersion\Policies\Explorer\Run\\n\nC2 Sifrelemesi:\n BCryptGenRandom / TLS13-AES128-GCM-SHA256\n RSA Private Key embed -> C2 iletisimi TLS 1.3 ile sifrelenir\n pro.ip-api.com/line/?key=QPVvv1rHQJD2pd2 <- coğrafi konum API
Tarayici Kimlik Bilgisi Hirsizligi
\AppData\Local\Google\Chrome\User Data\Default\Login Data\nRecoverCookies <- tarayici cerez kurtarma\nCookies <- web oturumu calma
IOC
| SHA256 | 40079f05ba7cdccac1f62f8e7e1b644bc0a806b58465f5c005725bc54ee73ef1 |
|---|---|
| RAT | RemcosRAT (BreakingSecurity.net) |
| Enjeksiyon | Process Hollowing (NtUnmapViewOfSection) |
| UAC | EnableLUA=0 Registry bypass |
| Yetenekler | Keylogger, Clipboard, Audio, Screenshot, Chrome cookies |
RemcosRAT — Perfil del malware
RemcosRAT - BreakingSecurity.net tarafindan lisansli satilan uzaktan erisim araci. Mesbru pentesting araci olarak satilsa da kriminal aktörler tarafindan yaygin kullanilir. Process hollowing, keylogger, clipboard/audio/screenshot izleme, Chrome kimlik bilgisi hirsizligi, UAC bypass, TLS 1.3 sifreli C2.
Detalles técnicos
TCP port 2404 (varsayilan), RC4 veya XOR sifreleme, C++ ile gelistirilmis, PE injection, UAC bypass (CMSTPLUA), AMSI bypass, Anti-debug (GetTickCount/RDTSC), DGA destekli C2, Keylogger, Screenshot, Audio
Atribución / Actor de amenaza
Breaking Security firmasinin isvicre tabanli olmasi nedeniyle ilk gelistirme AB'de gerceklestirilmistir; ancak surekli dunya genelinde siber suclu topluluklari tarafindan kullanilmaktadir.
Capacidades y comportamiento
Lista IOC (1 indicadores)
# SHA256
40079f05ba7cdccac1f62f8e7e1b644bc0a806b58465f5c005725bc54ee73ef1
| Tipo | Valor | Nota |
|---|---|---|
| sha256 | 40079f05ba7cdccac1f62f8e7e1b644bc0a806b58465f5c005725bc54ee73ef1 |
Servidores C2 (8 servidores registrados para esta familia)
| Dirección | Tipo | Puerto | Protocolo | Estado | País |
|---|---|---|---|---|---|
| breakingsecurity.net | domain | — | TCP | active | — |
| breakingsecurity.net | domain | — | TCP | active | — |
| breakingsecurity.net | domain | — | TCP | active | — |
| paint.net | domain | — | TCP | active | — |
| americanshippingline.com | domain | — | TCP | active | — |
| purl.org | domain | — | TCP | active | — |
| adobe.com | domain | — | TCP | active | — |
| paint.net | domain | — | TCP | active | — |
Las direcciones C2 se proporcionan únicamente a partir de muestras de malware verificadas manualmente por el equipo KEYDAL. Se prohíbe el uso comercial.