full-disclosure - [FD] Backdoor.Win32.Agent.aer / Insecure Transit Password Disclosure

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Message-ID: <CAAHK0WQWrqT=TN-ow1VH0MhV14Vo3gSByxt=oJu8jkixt3Rw+Q@mail.gmail.com>
Date: Sat, 25 Sep 2021 21:14:45 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Agent.aer / Insecure Transit Password Disclosure

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/9576a6a59715a69be499fa41d6383a64_B.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Agent.aer
Vulnerability: Insecure Transit Password Disclosure
Description: The malware listens on TCP port 1080 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: 9576a6a59715a69be499fa41d6383a64
Vuln ID: MVID-2021-0347
Dropped files: svchost.exe
Disclosure: 09/25/2021

Exploit/PoC:
Plaintext password passed in URL using GET method
http://x.x.x.x:1080/login?Nombre=admin&Password=abc123

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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