Advertisement




Edit Report

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2022040106

Below is a copy:

Trojan-Downloader.Win32.Small.ahlq / Insecure Permissions
Discovery / credits: Malvuln - malvuln.com (c) 2022
Original source: https://malvuln.com/advisory/d859ba54086fd0313dc34b73b5b1eccb.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Trojan-Downloader.Win32.Small.ahlq
Vulnerability: Insecure Permissions 
Description: the malware creates a directory with insecure permissions under c drive granting 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. 
Family: Small
Type: PE32
MD5: d859ba54086fd0313dc34b73b5b1eccb
Vuln ID: MVID-2022-0567
Disclosure: 04/26/2022


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

 Directory of C:\Temp

04/14/2022  04:03 AM           761,344 vjrgq12Server_Setup.exe
               1 File(s)        761,344 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).

Copyright ©2022 Exploitalert.

All trademarks used are properties of their respective owners. By visiting this website you agree to Terms of Use.