Trojan-Dropper.Win32.Agent.xtp malware suffers from an insecure permissions vulnerability.
8e89a86e6c11f3f3c3c59b5fc095a20dDiscovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/360bbc9e0926488f085029948ff6c759.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Trojan-Dropper.Win32.Agent.xtp
Vulnerability: Insecure Permissions
Description: The malware creates an insecure dir named "remove" 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: 360bbc9e0926488f085029948ff6c759
Vuln ID: MVID-2021-0180
Disclosure: 04/21/2021
Exploit/PoC:
C:\>cacls remove
C:\remove 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 remove
Volume in drive C has no label.
Directory of C:\remove
04/20/2021 11:54 PM 5,090 clngbuster.reg
04/20/2021 11:54 PM 192 deleta.CMD
04/20/2021 11:54 PM 155 mata.CMD
04/20/2021 11:54 PM 146,232 movefile.exe
04/20/2021 11:54 PM 234,536 psexec.exe
04/20/2021 11:54 PM 187,184 pskill.exe
04/20/2021 11:54 PM 126 remove.CMD
04/20/2021 11:54 PM 237 removeGB.CMD
04/20/2021 11:54 PM 303,616 SetACL.exe
04/20/2021 11:54 PM 2,971 setreg.CMD
10 File(s) 880,339 bytes
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