Technical Information
To ensure autorun and distribution:
Creates the following services:
- [<HKLM>\SYSTEM\ControlSet001\Services\certutil.exe] 'Start' = '00000002'
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\certutil.exe' = '<SYSTEM32>\certutil.exe:*:Enabled:certutil.exe'
Creates and executes the following:
- <SYSTEM32>\certutil.exe /s /p 27016 /i
Executes the following:
- <SYSTEM32>\netsh.exe firewall add allowedprogram "<SYSTEM32>\certutil.exe" "certutil.exe" ENABLE
Modifies file system :
Creates the following files:
- <SYSTEM32>\947ACCB28EE455EB464D259DDFE3FA6B\conf\.time
- <SYSTEM32>\certutil.exe
Network activity:
Connects to:
- 'wpad.localdomain':80
- 'gw#.##ufshop.com':80
- 'fr####areanalog.com':80
TCP:
HTTP GET requests:
- wpad.localdomain/wpad.dat
- gw#.##ufshop.com/skulls/skulls.php?ge############################################
- fr####areanalog.com/freud/?a=#######
UDP:
- DNS ASK gw#####he.bearshare.net
- DNS ASK wpad.localdomain
- DNS ASK gw#.##ufshop.com
- DNS ASK fr####areanalog.com
- '23#.#55.255.250':1900
