Trojan.Win32.Hotkeychick.d malware suffers from an insecure permissions vulnerability.
33cfa40e079f57bf298edf55988d7d49Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/aff493ed1f98ed05c360b462192d2853.txt
Contact: [email protected]
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
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