Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,C:\DOCUME~1\%USERNAME%\LOCALS~1\Temp\eUQh4a4PfR8nk2xF.exe'
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'BIOS Backup' = '%APPDATA%\eUQh4a4PfR8nk2xF.exe'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'BIOS Backup' = '%APPDATA%\eUQh4a4PfR8nk2xF.exe'
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Modifies file system :
Creates the following files:
- %TEMP%\dw.log
- %TEMP%\2E545.dmp
- %APPDATA%\eUQh4a4PfR8nk2xF.exe
- %TEMP%\eUQh4a4PfR8nk2xF.exe
Sets the 'hidden' attribute to the following files:
- %TEMP%\eUQh4a4PfR8nk2xF.exe
- %APPDATA%\eUQh4a4PfR8nk2xF.exe
Network activity:
Connects to:
- 'www.so####invalid.com':80
- 'wp#d':80
- '20#.#3.45.79':22
TCP:
HTTP GET requests:
- wp#d/wpad.dat
HTTP POST requests:
- www.so####invalid.com/connect.php
UDP:
- DNS ASK www.so####invalid.com
- DNS ASK wp#d
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: ''
- ClassName: 'Indicator' WindowName: ''
