Trojan-Spy.Win32.Pophot.bsl malware suffers from an insecure permissions vulnerability.
d84abac25b9b004380790dd21ceec9c49b73c59db79cee24d39decbe0e1623e1Discovery / credits: Malvuln (John Page aka hyp3rlinx) (c) 2022
Original source: https://malvuln.com/advisory/8c0e6ec6b8ac9eb1169e63df71f24456.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Trojan-Spy.Win32.Pophot.bsl
Vulnerability: Insecure Permissions
Description: The malware writes a BATCH file ".bat" to c drive granting change (C) permissions to the authenticated user group. Standard users can rename the file 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: Pophot
Type: PE32
MD5: 8c0e6ec6b8ac9eb1169e63df71f24456
Vuln ID: MVID-2022-0635
Disclosure: 09/06/2022
Exploit/PoC:
C:\>type zhqbdf.bat
"C:\WINDOWS\system\zhqbs080722.exe" i
del %0
C:\>cacls zhqbdf.bat
C:\zhqbdf.bat BUILTIN\Administrators:(ID)F
NT AUTHORITY\SYSTEM:(ID)F
BUILTIN\Users:(ID)R
NT AUTHORITY\Authenticated Users:(ID)C
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