Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'b4c27ec5059eebf50360bd68c15bcc0e' = '"%TEMP%\dll.exe" ..'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'b4c27ec5059eebf50360bd68c15bcc0e' = '"%TEMP%\dll.exe" ..'
Creates or modifies the following files:
- %HOMEPATH%\Start Menu\Programs\Startup\b4c27ec5059eebf50360bd68c15bcc0e.exe
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '%TEMP%\dll.exe' = '%TEMP%\dll.exe:*:Enabled:dll.exe'
Creates and executes the following:
- '%TEMP%\dll.exe'
- '%TEMP%\285.exe'
Executes the following:
- '<SYSTEM32>\netsh.exe' firewall add allowedprogram "%TEMP%\dll.exe" "dll.exe" ENABLE
Modifies file system :
Creates the following files:
- %TEMP%\285.exe
- %TEMP%\dll.exe
- %APPDATA%\Microsoft\CryptnetUrlCache\MetaData\7B2238AACCEDC3F1FFE8E7EB5F575EC9
- %APPDATA%\Microsoft\CryptnetUrlCache\Content\7B2238AACCEDC3F1FFE8E7EB5F575EC9
Network activity:
Connects to:
- 'fu####l.no-ip.biz':1166
- '20#.#6.232.182':80
- 'wp#d':80
TCP:
HTTP GET requests:
- 20#.#6.232.182/pki/crl/products/CSPCA.crl
- wp#d/wpad.dat
UDP:
- DNS ASK fu####l.no-ip.biz
- DNS ASK crl.microsoft.com
- DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: '(null)'
