Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/d58b1c2f540268bd9dd920455568d45f.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Trojan-Spy.Win32.Stealer.osh Vulnerability: Insecure Permissions Description: The malware creates an insecure dir named "DESKTOP-2C3IQHO" under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the malware and reboot to disable it or replace with their own executable to escalate privileges when a privileged user logs on to the infected machine. Type: PE32 MD5: d58b1c2f540268bd9dd920455568d45f Vuln ID: MVID-2021-0117 Dropped files: ApiSetHost.AppExecutionAlias.exe Disclosure: 03/1/2021 Exploit/PoC: C:\>cacls \DESKTOP-2C3IQHO\scp C:\DESKTOP-2C3IQHO\scp 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 \DESKTOP-2C3IQHO\scp  Volume in drive C has no label.  Directory of C:\DESKTOP-2C3IQHO\scp 02/23/2021  07:41 PM         1,238,020 ApiSetHost.AppExecutionAlias.exe                1 File(s)      1,238,020 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).