Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'WINDOWS' = '%TEMP%\EncryptedFile.exe'
- [<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows\CurrentVersion\Run\] 'Windows Firewall' = '%APPDATA%\lsass.exe'
- [<HKCU>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\] 'Windows Firewall' = '%APPDATA%\lsass.exe'
- [<HKLM>\Software\Wow6432Node\Microsoft\Windows\CurrentVersion\Run] 'WINDOWS' = '%APPDATA%\lsass.exe'
Creates the following files on removable media
- <Drive name for removable media>:\tthdhgc\dfg-2352-66235-2352322-634621321-6662355\desktop.ini
- <Drive name for removable media>:\tthdhgc\dfg-2352-66235-2352322-634621321-6662355\364855.exe
- <Drive name for removable media>:\autorun.inf
Malicious functions
Injects code into
the following user processes:
- lsass.exe
Modifies file system
Creates the following files
- %TEMP%\encryptedfile.exe
- %APPDATA%\lsass.exe
Sets the 'hidden' attribute to the following files
- %APPDATA%\lsass.exe
- <Drive name for removable media>:\tthdhgc\dfg-2352-66235-2352322-634621321-6662355\364855.exe
Network activity
Connects to
- '<LOCALNET>.0.0':445
- '<LOCALNET>.0.0':139
- '<LOCALNET>.0.0':80
UDP
- DNS ASK an#####scool.no-ip.biz
Miscellaneous
Creates and executes the following
- '%TEMP%\encryptedfile.exe'
- '%APPDATA%\lsass.exe'
- '%APPDATA%\lsass.exe' ' (with hidden window)
