Trojan.Win32.Cospet.abg Insecure Permissions

Trojan.Win32.Cospet.abg malware suffers from an insecure permissions vulnerability.


MD5 | 07ecb73daef0b93254d07f1f64c79f10

Discovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/5f5b308853b9aa9243390c135ff6ba1b.txt
Contact: [email protected]
Media: twitter.com/malvuln

Threat: Trojan.Win32.Cospet.abg
Vulnerability: Insecure Permissions EoP
Description: Cospet.abg, creates an vulnerable dir named "dir" under c:\ drive granting change (C) permissions to the authenticated users group. Sends SYN packet to TCP port 2185.
Type: PE32
MD5: 5f5b308853b9aa9243390c135ff6ba1b
Vuln ID: MVID-2021-0069
Dropped files: Lsas.exe
Disclosure: 02/06/2021

Exploit/PoC:
C:\>cacls \dir
C:\dir 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


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