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Backdoor.Win32.Noknok.50 / Insecure Permissions

CVE Category Price Severity
N/A CWE-269 $500 High
Author Risk Exploitation Type Date
Unknown High Remote 2021-01-23
CPE
cpe:cpe:/o:microsoft:windows
CVSS EPSS EPSSP
CVSS:3.1/AV:A/AC:L/PR:H/UI:N/S:U/C:H/I:H/A:H 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at: https://cxsecurity.com/ascii/WLB-2021010167

Below is a copy:

Backdoor.Win32.Noknok.50 / Insecure Permissions
Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/ca80897ee064ab9af5907344b316a247.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Backdoor.Win32.Noknok.50
Vulnerability: Insecure Permissions
Description: This trojan creates a dir under C: with change permissions granted to authenticated users group.

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It's 100% FREEWARE !


Type: PE32
MD5: ca80897ee064ab9af5907344b316a247
Vuln ID: MVID-2021-0047 
Disclosure: 01/23/2021


Exploit/PoC:
C:\>cacls C:\NokNok5
C:\NokNok5 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



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