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Trojan.Win32.Phires.zm MVID-2021-0384 Insecure Permissions

Trojan.Win32.Phires.zm MVID-2021-0384 Insecure Permissions
Posted Nov 1, 2021
Authored by malvuln | Site malvuln.com

Trojan.Win32.Phires.zm malware suffers from an insecure permissions vulnerability.

tags | exploit, trojan
systems | windows
SHA-256 | 081997b54d2c75b62d767914e72d40983a07b186f536d19a2e9da9c012259986

Trojan.Win32.Phires.zm MVID-2021-0384 Insecure Permissions

Change Mirror Download
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/34fb086a88f3a2506b61a17cced3b476.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan.Win32.Phires.zm
Vulnerability: Insecure Permissions
Description: The malware creates an dir with insecure permissions
containing a registry file with a ".desc" extension, under c:\ drive
granting change (C) permissions to the authenticated user group. Standard
users can rename the file dropped by the malware to disable it or replace
it with their own. Then wait for a privileged user to logon to the infected
machine to potentially escalate privileges.
Type: PE32
MD5: 34fb086a88f3a2506b61a17cced3b476
Vuln ID: MVID-2021-0384
Dropped files: info.desc
Disclosure: 11/01/2021

Exploit/PoC:
C:\> cacls Adobes
C:\Adobes BUILTIN\Administrators:(OI)(CI)(ID)F
NT AUTHORITY\SYSTEM:(OI)(CI)(ID)F
BUILTIN\Users:(OI)(CI)(ID)R
NT AUTHORITY\Authenticated Users:(ID)C
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C

C:\>dir Adobes
Volume in drive C has no label.

Directory of C:\Adobes

09/28/2010 03:29 PM 280 info.desc
1 File(s) 280 bytes

Windows Registry Editor Version 5.00
[HKEY_CURRENT_USER\Software\Microsoft\Internet Explorer\Main]
"Start Page"="http://www.hae123.com"


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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