Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\dllhost
Modifies file system
Creates the following files
- %APPDATA%\dllhost.exe
- %TEMP%\tmpca50.tmp.bat
- nul
Network activity
TCP
HTTP GET requests
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
UDP
- DNS ASK 2.###.eu.ngrok.io
- DNS ASK microsoft.com
Miscellaneous
Creates and executes the following
- '%APPDATA%\dllhost.exe'
- '%WINDIR%\syswow64\cmd.exe' /c schtasks /create /f /sc onlogon /rl highest /tn "dllhost" /tr '"%APPDATA%\dllhost.exe"' & exit' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /c schtasks /create /f /sc onlogon /rl highest /tn "dllhost" /tr '"%APPDATA%\dllhost.exe"' & exit
- '%WINDIR%\syswow64\cmd.exe' /c ""%TEMP%\tmpCA50.tmp.bat""
- '%WINDIR%\syswow64\schtasks.exe' /create /f /sc onlogon /rl highest /tn "dllhost" /tr '"%APPDATA%\dllhost.exe"'
- '%WINDIR%\syswow64\timeout.exe' 3
