Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/9c23dad9ba11305fecf38bed46b0cec2.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.FTP.Nuclear.10 Vulnerability: Hardcoded Credentials Description: The malware builds backdoor files and uses UPX packer. When building server.exe the provided credentials are then stored within the PE file. Unpacking the malware reveals the hardcoded credentials of which the default is "nuclearftp". Family: Nuclear Type: PE32 MD5: 9c23dad9ba11305fecf38bed46b0cec2 Vuln ID: MVID-2022-0503 Dropped files: server.exe Disclosure: 03/03/2022 Exploit/PoC: C:\dump>strings.py server.exe | findstr nuclearftp 0x5e584: nuclearftp 0x5e5a8: nuclearftp 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).