lists.openwall.net   lists  /  announce  owl-users  owl-dev  john-users  john-dev  passwdqc-users  yescrypt  popa3d-users  /  oss-security  kernel-hardening  musl  sabotage  tlsify  passwords  /  crypt-dev  xvendor  /  Bugtraq  Full-Disclosure  linux-kernel  linux-netdev  linux-ext4  linux-hardening  PHC 
Open Source and information security mailing list archives
 
Hash Suite: Windows password security audit tool. GUI, reports in PDF.
[<prev] [next>] [day] [month] [year] [list]
Date: Wed, 7 Apr 2021 20:36:14 -0400
From: malvuln <malvuln13@...il.com>
To: fulldisclosure@...lists.org
Subject: [FD] Trojan.Win32.Hotkeychick.d / Insecure Permissions

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source:
https://malvuln.com/advisory/aff493ed1f98ed05c360b462192d2853.txt
Contact: malvuln13@...il.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    &lt;DIR&gt;          conf
04/07/2021  04:52 PM    &lt;DIR&gt;          COPYING
04/07/2021  04:52 PM    &lt;DIR&gt;          database
03/10/2018  11:54 PM           131,072 freshclam.exe
04/07/2021  04:52 PM    &lt;DIR&gt;          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    &lt;DIR&gt;          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    &lt;DIR&gt;          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    &lt;DIR&gt;          update
04/30/2018  07:34 AM           928,768 updater_en.exe
04/07/2021  04:52 PM    &lt;DIR&gt;          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).

_______________________________________________
Sent through the Full Disclosure mailing list
https://nmap.org/mailman/listinfo/fulldisclosure
Web Archives & RSS: http://seclists.org/fulldisclosure/

Powered by blists - more mailing lists