Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] '' = '"%APPDATA%\Local\Microsoft\CurrentVersion\winlogon.exe"'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'HKCU' = '"%APPDATA%\Local\Microsoft\CurrentVersion\winlogon.exe"'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\temp\sys32.exe
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
- file extensions
blocks the following features:
- System Restore (SR)
- User Account Control (UAC)
Creates and executes the following:
- %APPDATA%\Local\Microsoft\CurrentVersion\winlogon.exe
Executes the following:
- <SYSTEM32>\rundll32.exe InetCpl.cpl,ClearMyTracksByProcess 2
Terminates or attempts to terminate
the following user processes:
- zlclient.exe
- outpost.exe
- bdagent.exe
Modifies file system :
Creates the following files:
- %TEMP%\StartupImage.jpeg
- %TEMP%\cdinformation.txt
- %APPDATA%\Local\Microsoft\CurrentVersion\winlogon.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\temp\sys32.exe
Network activity:
Connects to:
- 'sm##.gmail.com':587
UDP:
- DNS ASK sm##.gmail.com
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: '' WindowName: 'Windows Task Manager'
- ClassName: 'Indicator' WindowName: ''
