Backdoor.Win32.DarkKomet.gozu malware suffers from an insecure permissions vulnerability.
f888eb4ba2053726c10a02daa53af134Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/00199eb3fd1a0aa6771b7f12fad895a0.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Backdoor.Win32.DarkKomet.gozu
Vulnerability: Insecure Permissions
Description: Creates a hidden dir named "AQIpWUAQIpWU" under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the executables 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: 00199eb3fd1a0aa6771b7f12fad895a0
Vuln ID: MVID-2021-0145
Dropped files: AQIpWU.exe
Disclosure: 03/24/2021
Exploit/PoC:
C:\>dir /a AQIpWUAQIpWU
Volume in drive C has no label.
Directory of C:\AQIpWUAQIpWU
03/04/2016 05:30 PM 16,896 AQIpWU.exe
03/04/2016 05:30 PM 483,846 x
2 File(s) 500,742 bytes
2 Dir(s) 16,012,754,944 bytes free
C:\>cacls AQIpWUAQIpWU
C:\AQIpWUAQIpWU 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
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