Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/aff493ed1f98ed05c360b462192d2853.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Trojan.Win32.Hotkeychick.d Vulnerability: Insecure Permissions Description: creates an insecure dir named "Sniperscan" 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: aff493ed1f98ed05c360b462192d2853 Vuln ID: MVID-2021-0163 Disclosure: 04/07/2021 Exploit/PoC: C:\>cacls Sniperscan C:\Sniperscan 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 Sniperscan Volume in drive C has no label. Directory of C:\Sniperscan 01/14/2019 02:00 PM 3,020 CHANGELOG.txt 03/10/2018 11:53 PM 118,784 clamd.exe 03/10/2018 11:53 PM 77,824 clamdscan.exe 04/07/2021 04:52 PM <DIR> conf 04/07/2021 04:52 PM <DIR> COPYING 04/07/2021 04:52 PM <DIR> database 03/10/2018 11:54 PM 131,072 freshclam.exe 04/07/2021 04:52 PM <DIR> ico 03/10/2018 11:53 PM 3,313,664 libclamav.dll 03/10/2018 11:47 PM 65,536 libclamunrar.dll 03/10/2018 11:53 PM 25,600 libclamunrar_iface.dll 01/02/2016 08:32 AM 1,179,648 libeay32.dll 11/09/2018 04:34 PM 1,644 LICENSE.txt 01/02/2016 08:32 AM 1,870 Microsoft.VC80.CRT.manifest 01/02/2016 08:32 AM 479,232 msvcm80.dll 01/02/2016 08:32 AM 554,832 msvcp80.dll 01/02/2016 08:32 AM 632,656 msvcr80.dll 04/07/2021 04:52 PM <DIR> quarantine 11/14/2018 07:17 PM 382 question.png 04/07/2021 04:52 PM 445 sigupdate.log 03/10/2018 11:53 PM 77,824 snipedscan.exe 01/25/2019 05:39 PM 1,309,184 sniperscan.exe 04/07/2021 04:52 PM 329 sniperscan.log 01/02/2016 08:32 AM 125 sniperscan.reg 01/25/2019 05:38 PM 218,809 sniperscanengine.exe 04/07/2021 04:52 PM 216 sniperscanengine.log 09/14/2017 06:26 AM 219,563 sniperscanregistrationen.exe 04/07/2021 04:52 PM <DIR> temp 02/21/2016 07:50 AM 236 TODOS.txt 04/07/2021 04:52 PM 36,977 uninstall.exe 04/07/2021 04:52 PM <DIR> update 04/30/2018 07:34 AM 928,768 updater_en.exe 04/07/2021 04:52 PM <DIR> version 01/13/2019 10:18 AM 4 VERSION.txt 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).