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Trojan-Downloader.Win32.Genome.qiw MVID-2021-0164 Insecure Permissions

Trojan-Downloader.Win32.Genome.qiw MVID-2021-0164 Insecure Permissions
Posted Apr 8, 2021
Authored by malvuln | Site malvuln.com

Trojan-Downloader.Win32.Genome.qiw malware suffers from an insecure permissions vulnerability.

tags | exploit, trojan
systems | windows
SHA-256 | 438438a6449ddc2b15119b9b26eb65081663cd10fa9f1f598aabeedd68158f92

Trojan-Downloader.Win32.Genome.qiw MVID-2021-0164 Insecure Permissions

Change Mirror Download
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/5cddc4647fb1c59f5dc7f414ada7fad4.txt
Contact: malvuln13@gmail.com
Media: twitter.com/malvuln

Threat: Trojan-Downloader.Win32.Genome.qiw
Vulnerability: Insecure Permissions
Description: Genome.qiw creates an insecure dir named "tmp" 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: 5cddc4647fb1c59f5dc7f414ada7fad4
Vuln ID: MVID-2021-0164
Dropped files: 003.exe, BtPlayer_Setup_9999.exe
Disclosure: 04/07/2021

Exploit/PoC:
C:\>cacls tmp
C:\tmp 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 \tmp
Volume in drive C has no label.

Directory of C:\tmp

09/02/2009 02:59 PM 25,076 003.exe
09/02/2009 02:57 PM 2,218,086 BtPlayer_Setup_9999.exe
2 File(s) 2,243,162 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).
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