Discovery / credits: Malvuln - malvuln.com (c) 2022 Original source: https://malvuln.com/advisory/b24c56abb4bde960c2d51d4e509d2c68.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Backdoor.Win32.Cafeini.b Vulnerability: Denial of Service Family: Cafeini Type: PE32 MD5: b24c56abb4bde960c2d51d4e509d2c68 Vuln ID: MVID-2022-0525 Disclosure: 03/25/2022 Description: The malware listens on TCP port 51966 and is packed by a modified UPX implementation. Third-party adversaries who can reach an infected system can terminate the malware by issuing the cmd DIEDIEDIE, without being required to authenticate. UPX1:004560B4 aDiediedie db 'DIEDIEDIE',0 ; DATA XREF: sub_406C68:loc_40739E UPX1:004560B4 ; sub_40DB4D+255B UPX1:004560BE align 10h Exploit/PoC: C:\>nc64.exe x.x.x.x 51966 CAFEiNi 1.1 Enter your password: DIEDIEDIE 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).