Backdoor.Win32.VB.afu Insecure Transit

Backdoor.Win32.VB.afu suffers from an insecure transit vulnerability that discloses credentials.

MD5 | a5bb8f7955b5313e26014d70e125e15c

Discovery / credits: Malvuln - (c) 2021
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.VB.afu
Vulnerability: Insecure Transit Password Disclosure
Description: The malware launches Internet Explorer browser and passes logon credentials in plaintext via a URL query string using the HTTP GET request method. Third party attackers who can sniff traffic or access the machine used to logon may also locate the credentials, as the URL contents can potentially be leaked or stored in some of the following locations.

Browser History
Browser Cache
Browser Developer Tools
Cached by web proxy
Referer Header
Web Logs
Shared Systems
Type: PE32
MD5: c6ba7fcb9eb9bdd7e081e2e84e784dcb
Vuln ID: MVID-2021-0392
Dropped files: Explorer.exe
Disclosure: 11/05/2021

Exploit/PoC:[email protected]

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