Discovery / credits: Malvuln - malvuln.com (c) 2021 Original source: https://malvuln.com/advisory/095651e1704b501123b41ea2e9736820.txt Contact: malvuln13@gmail.com Media: twitter.com/malvuln Threat: Trojan.Win32.Agent.xaamkd Vulnerability: Insecure Permissions Description: The malware creates an dir with insecure permissions under c:\ drive and grants change (C) permissions to the authenticated user group. Standard users can rename the 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. Type: PE32 MD5: 095651e1704b501123b41ea2e9736820 Vuln ID: MVID-2021-0342 Disclosure: 09/20/2021 Exploit/PoC: C:\>cacls SangClub C:\SangClub 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 SangClub Volume in drive C has no label. Directory of C:\SangClub 03/17/2015 06:08 AM 172,032 AniGIF.ocx 11/06/2009 07:56 AM 34,882 audioplay.swf 01/16/2009 09:06 AM 566,272 bsFileClientSDK.dll 06/24/2018 02:06 AM 177,525 CandleFormation.SS7 06/24/2018 02:06 AM 39,164 CandleFormUsers.SS7 11/02/2007 01:36 AM 1,337,264 Codejock.Controls.v11.2.1.ocx 04/22/2012 10:01 PM 1,931,256 Codejock.Controls.v15.2.1.0423.ocx 07/05/2012 09:28 AM 103 CommInfo.ini 09/17/2021 08:07 PM DIR dat 06/15/2003 09:05 AM 133,632 DWEASY36.OCX 06/15/2003 09:02 AM 115,712 DWSBC36.OCX 10/26/2003 12:02 AM 145,920 DWSHK36.OCX 09/14/2003 04:30 PM 77,824 DWSPY36.dll 04/22/1999 09:50 AM 14,848 dwspy5.dll 10/13/1999 01:00 AM 122,880 dwspyvb6.dll 02/22/2007 05:27 AM 344,064 FLICapture.dll 04/22/2011 11:44 AM 335,872 fmtkit60.dll 08/17/1999 08:54 PM 180,224 ijl11.dll 09/17/2021 08:07 PM DIR Image 07/21/1998 11:00 AM 13,824 INETKO.DLL 05/28/2019 10:02 AM 3,565,736 JetSound.exe 05/28/2019 09:49 AM 751,464 LiveStart.exe 03/08/2004 10:00 AM 132,880 MSINET.OCX 06/01/2011 02:58 AM 27 Regcom.bat 03/22/2009 03:47 AM 10,000 regsvr32.exe 11/16/2016 07:44 AM 515,064 SabuStart.exe 05/28/2019 09:49 AM 128,872 SangCapture.exe 06/22/2019 11:57 PM 12,318,776 SangClub.exe 03/28/2008 12:44 AM 143,360 Sangcomm.dll 05/28/2019 09:50 AM 4,081,512 SangPlayer.exe 05/29/2019 12:27 AM 3,629 ScoreList.SS7 03/17/2015 06:08 AM 77,824 Shape.ocx 02/01/2007 08:51 AM 626,688 SKComdCM.dll 02/01/2007 08:51 AM 53,248 SKComdEM.dll 02/01/2007 08:51 AM 503,808 SKComdIF.dll 02/01/2007 08:51 AM 73,728 SKComdSC.dll 12/26/2006 09:30 PM 65,536 SKCommIC.dll 04/07/2007 05:08 AM 63,120 skcommtm.exe 11/26/2006 08:42 PM 28,672 SKCommWB.exe 09/17/2021 08:07 PM DIR Skins 01/20/2006 02:00 AM 223,232 sqlite3.dll 09/17/2021 08:07 PM DIR Sys 05/28/2019 09:50 AM 4,970,344 VODPlayer.exe 03/21/2006 09:45 PM 292,696 XceedFtp.dll 01/10/2001 04:12 AM 147,456 XecureS.dll 01/05/2017 07:49 PM 237,568 XingAPI.dll 01/02/2017 06:30 AM 28,672 xingAPI4VB.dll 43 File(s) 34,787,210 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).