Original source: https://malvuln.com/advisory/6f484fea8f6bb3974185fc856f37541b.txt
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Threat: Trojan-Spy.Win32.SpyEyes.hqd
Vulnerability: Insecure Permissions
Description: The malware creates a dir with insecure permissions
under c:\ drive and grants 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: 6f484fea8f6bb3974185fc856f37541b
Vuln ID: MVID-2021-0299
Disclosure: 07/18/2021
Exploit/PoC:
C:\>cacls Recycle.Bin
C:\Recycle.Bin 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:\>dir Recycle.Bin
Volume in drive C has no label.
Directory of C:\Recycle.Bin
06/30/2021 03:11 AM 17,864 config.bin
02/10/2018 01:21 AM 242,688 Recycle.Bin.exe
2 File(s) 260,552 bytes
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