Virus.Win32.Sality.gen Insecure Permissions ≈ Packet Storm – Digitalmunition




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Published on March 25th, 2021 📆 | 4397 Views ⚑

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Virus.Win32.Sality.gen Insecure Permissions ≈ Packet Storm

Discovery / credits: Malvuln – malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/423a5a63bed721e479c156b309bb58fd.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Virus.Win32.Sality.gen
Vulnerability: Insecure Permissions
Description: Sality.gen creates a dir named “z_Drivers” under c: drive and grants change (C) permissions to the authenticated user group. Standard users can rename the “svchost.exe” 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: 423a5a63bed721e479c156b309bb58fd
Vuln ID: MVID-2021-0141
Dropped files: svchost.exe
Disclosure: 03/23/2021

Exploit/PoC:
C:>cacls z_Drivers
C:z_Drivers BUILTINAdministrators:(OI)(CI)(ID)F
NT AUTHORITYSYSTEM:(OI)(CI)(ID)F
BUILTINUsers:(OI)(CI)(ID)R
NT AUTHORITYAuthenticated Users:(ID)C
NT AUTHORITYAuthenticated Users:(OI)(CI)(IO)(ID)C

C:>dir z_Drivers
Volume in drive C has no label.

Directory of C:z_Drivers

06/16/2012 01:14 AM 255,488 svchost.exe
1 File(s) 255,488 bytes

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