Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Window Update' = '"%APPDATA%\Windows\dllhost.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Window Update' = '"%APPDATA%\Windows\Hosts\dllhost.exe"'
Malicious functions:
Executes the following:
- '%APPDATA%\Windows\dllhost.exe'
- '<SYSTEM32>\schtasks.exe' /create /tn "Window Update" /sc ONLOGON /tr "%APPDATA%\Windows\dllhost.exe" /rl HIGHEST /f
- '<SYSTEM32>\schtasks.exe' /create /tn "Window Update" /sc ONLOGON /tr "%APPDATA%\Windows\Hosts\dllhost.exe" /rl HIGHEST /f
- '%APPDATA%\Windows\Hosts\ZSpam 3.exe'
- '%APPDATA%\Windows\Hosts\dllhost.exe'
Modifies file system:
Creates the following files:
- %APPDATA%\Windows\dllhost.exe
- %APPDATA%\Log\07-22-2017
- %APPDATA%\Windows\Hosts\dllhost.exe
- %TEMP%\nsr2.tmp
- %APPDATA%\Windows\Hosts\ZSpam 3.exe
Sets the 'hidden' attribute to the following files:
- %APPDATA%\Windows\dllhost.exe
Network activity:
Connects to:
- 'ap#.#pify.org':80
- 'mi####.duckdns.org':1213
- 'ip##pi.com':80
- 'fr###eoip.net':80
TCP:
HTTP GET requests:
- http://ap#.#pify.org/
- http://fr###eoip.net/xml/
- http://ip##pi.com/json/
UDP:
- DNS ASK ap#.#pify.org
- DNS ASK mi####.duckdns.org
- DNS ASK ip##pi.com
- DNS ASK fr###eoip.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
