Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/db01783710e0c5aff92156a0e76deade.txt
Vulnerability: Insecure Permissions
Description: The specimen creates a dir named "tmp" under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the "DaumCleans.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.
Vuln ID: MVID-2021-0138
Dropped files: DaumCleans.exe
NT AUTHORITY\Authenticated Users:(ID)C
NT AUTHORITY\Authenticated Users:(OI)(CI)(IO)(ID)C
Volume in drive C has no label.
Directory of C:\tmp
03/20/2021 09:27 PM 38,824 DaumCleans.exe
1 File(s) 38,824 bytes
system("rename C:\\tmp\\DaumCleans.exe 13");
puts("[+] Disabled by renaming C:\\tmp\\DaumCleans.exe to 13 ...");
puts("[+] Reboot your machine");
puts("[+] Trojan-Dropper.Win32.Demp.rft PWNED!");
puts("[+] MD5: db01783710e0c5aff92156a0e76deade");
puts("[+] By Malvuln");
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