Email-Worm.Win32.Sircam.eb malware suffers from an insecure permissions vulnerability.
549ef90768d393736c83930a680b5f5bDiscovery / credits: Malvuln - malvuln.com (c) 2021
Original source: https://malvuln.com/advisory/cd88a9b686acd9ccf23dba8d248129b4.txt
Contact: [email protected]
Media: twitter.com/malvuln
Threat: Email-Worm.Win32.Sircam.eb
Vulnerability: Insecure Permissions EoP
Description: Sircam.eb creates a vuln dir under c:\ drive named "Windupdt" and drops an exe named "winupdate.exe". Grants change (C) permissions to authenticated users group.
Type: PE32
MD5: cd88a9b686acd9ccf23dba8d248129b4
Vuln ID: MVID-2021-0070
Dropped files: winupdate.exe
Disclosure: 02/06/2021
Exploit/PoC:
C:\>cacls \Windupdt
C:\Windupdt 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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