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Trojan.Win32.Scar.dxir MVID-2021-0128 Insecure Permissions

Trojan.Win32.Scar.dxir MVID-2021-0128 Insecure Permissions
Posted Mar 15, 2021
Authored by malvuln | Site malvuln.com

Trojan.Win32.Scar.dxir malware suffers from an insecure permissions vulnerability.

tags | exploit, trojan
systems | windows
SHA-256 | 34a6d50eb81b9596b9bf70eeb9120244f7ccb016c5961684830bc872c36265df

Trojan.Win32.Scar.dxir MVID-2021-0128 Insecure Permissions

Change Mirror Download
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/68ed9d6e4f3e917ab4b91689e2890754.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan.Win32.Scar.dxir
Vulnerability: Insecure Permissions
Description: Scar.dxir creates a insecure dir named "P2" under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the hidden "phate2.exe" file dropped by the malware to disable it or replace with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges.
Type: PE32
MD5: 68ed9d6e4f3e917ab4b91689e2890754
Vuln ID: MVID-2021-0128
Dropped files: phate2.exe
Disclosure: 03/14/2021

Exploit/PoC:
C:\>cacls P2
C:\P2 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:\>cd P2

C:\P2>dir
Volume in drive C has no label.

Directory of C:\P2

File Not Found

C:\P2>dir /a
Volume in drive C has no label.

Directory of C:\P2

06/30/2012 05:35 PM 90,865 phate2.exe
1 File(s) 90,865 bytes



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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