Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS4' = '<SYSTEM32>\bad3.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Msmsgs' = '<SYSTEM32>\Msmsgs.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS3' = '<SYSTEM32>\bad2.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS1' = '<SYSTEM32>\system.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'SYS2' = '<SYSTEM32>\bad1.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\system.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
blocks execution of the following system utilities:
- Windows Task Manager (Taskmgr)
- Registry Editor (RegEdit)
Modifies settings of Windows Explorer:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFolderOptions' = '00000001'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer] 'NoFind' = '00000001'
Forces autoplay for removable media.
Modifies file system :
Creates the following files:
- %HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\bad1[1].exe
- <SYSTEM32>\msmsgs.exe
- %WINDIR%\autorun.inf
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\system.exe
- <SYSTEM32>\msmsgs.exe
- %WINDIR%\autorun.inf
- <Drive name for removable media>:\autorun.inf
Network activity:
Connects to:
- 'pp#.th.gs':80
TCP:
HTTP GET requests:
- pp#.th.gs/web-p/pt/file/bad1.exe
UDP:
- DNS ASK pp#.th.gs
