Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunServices] 'Wndows Update' = 'sys1.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Wndows Update' = 'sys1.exe'
Malicious functions:
Creates and executes the following:
- <SYSTEM32>\sys1.exe 464 "<Full path to virus>"
Searches for windows to
detect analytical utilities:
- ClassName: 'PROCMON_WINDOW_CLASS' WindowName: ''
- ClassName: 'RegMonClass' WindowName: ''
- ClassName: 'FileMonClass' WindowName: ''
Modifies file system :
Creates the following files:
- %ALLUSERSPROFILE%\Application Data\TEMP:C980DA7D
- <SYSTEM32>\sys1.exe
Sets the 'hidden' attribute to the following files:
- <SYSTEM32>\sys1.exe
Deletes itself.
Network activity:
Connects to:
- 'ko####wa.static.net':6667
UDP:
- DNS ASK Ko####Wa.static.net
- '<Private IP address>':1034
Miscellaneous:
Searches for the following windows:
- ClassName: 'ThunderRT6FormDC' WindowName: ''
- ClassName: 'ThunderRT6FormDC' WindowName: 'Shareware Cheater v 3.0'
