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Email-Worm.Win32.Deltad MVID-2021-0409 Insecure Permissions

Email-Worm.Win32.Deltad MVID-2021-0409 Insecure Permissions
Posted Nov 27, 2021
Authored by malvuln | Site malvuln.com

Email-Worm.Win32.Deltad malware suffers from an insecure permissions vulnerability.

tags | exploit, worm
systems | windows
SHA-256 | 66243679323269793c782e6c8a7e8a4a1b44e4aca08136880f17dc8b4c55b85a

Email-Worm.Win32.Deltad MVID-2021-0409 Insecure Permissions

Change Mirror Download
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/33f1dc8cf5987751ac0f063601f1c324.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Email-Worm.Win32.Deltad
Vulnerability: Insecure Permissions
Description: The malware writes an .EXE with insecure permissions under c:\ drive granting change (C) permissions to the authenticated user group. Standard users can rename the executable dropped by the malware to disable it or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges.
Type: PE32
MD5: 33f1dc8cf5987751ac0f063601f1c324
Vuln ID: MVID-2021-0409
Disclosure: 11/25/2021


Exploit/PoC:
C:\WWW.DGSAP.DELTADG.COM.EXE BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C


C:\>dir WWW.DGSAP.DELTADG.COM.EXE
Volume in drive C has no label.

Directory of C:\

11/24/2021 09:19 PM 217,347 WWW.DGSAP.DELTADG.COM.EXE
1 File(s) 217,347 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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