Submit #5371: BACKDOOR.WIN32.XTREME.YVP / Insecure Permissions EoP

Discovery / credits: malvuln - Malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/7bd93c10c9373cfc2bcc8eff712631f1.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Xtreme.yvp
Vulnerability: Insecure Permissions EoP
Description: Change permissions are granted to authenticated users, allowing privilege escalation.
Type: PE32
MD5: 7bd93c10c9373cfc2bcc8eff712631f1
Vuln ID: MVID-2021-0017
Dropped files: System.exe
Disclosure: 01/08/2021

Exploit/PoC:
C:\>cacls C:\SystemG\System.exe
C:\SystemG\System.exe BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C

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• Source: ⚠️ https://malvuln.com/advisory/7bd93c10c9373cfc2bcc8eff712631f1.txt
• User: malvuln (UID 14984)
• Submission: 01/08/2021 05:44 (5 years ago)
• Moderation: 01/08/2021 07:31 (2 hours later)
• Status: Accepted
• VulDB entry: 167426 [Backdoor.Win32.Xtreme.yvp System.exe permission]
• Points: 20