Original source: https://malvuln.com/advisory/c58d5aecd223ac95ae5fab6dcd69e953.txt
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Threat: Trojan.Win32.Agent.hsm
Vulnerability: Insecure Permissions
Description: Agent.hsm creates an insecure dir named "LOL" 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: c58d5aecd223ac95ae5fab6dcd69e953
Vuln ID: MVID-2021-0178
Dropped files: jah.exe
Disclosure: 04/18/2021
Exploit/PoC:
C:\>cacls LOL
C:\LOL 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 LOL
Volume in drive C has no label.
Directory of C:\LOL
12/30/2019 04:16 AM 45,056 jah.exe
1 File(s) 45,056 bytes
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