Backdoor.Win32.InfecDoor.17.c malware suffers from an insecure permissions vulnerability.
3d83874665d92c5753ea0f979739fbb96e5a47c3ff77657f79b68a13a96e6218Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/1fd70e41918c3a75c634b1c234ec36fb.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Backdoor.Win32.InfecDoor.17.c
Vulnerability: Insecure Permissions
Description: The malware writes a ".420" settings file type to c drive granting change (C) permissions to the authenticated user group. Standard users can rename the file dropped by the malware to disable, change its settings or replace it with their own executable. Then wait for a privileged user to logon to the infected machine to potentially escalate privileges.
Family: InfecDoor
Type: PE32
MD5: 1fd70e41918c3a75c634b1c234ec36fb
Vuln ID: MVID-2022-0614
Disclosure: 06/23/2022
Exploit/PoC:
C:\>cacls Infector.420
C:\Infector.420 BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C
C:\>dir Infector.420
Volume in drive C has no label.
Directory of C:\
04/11/2022 03:29 AM 36 Infector.420
1 File(s) 36 bytes
0 Dir(s) 24,644,292,608 bytes free
C:\>type Infector.420
[My_OVER_ALL_SETTINGS]
FirsTime=0
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