Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'TrustedInstaller.exe' = '"%APPDATA%\Microsoft\Windows\TrustedInstaller.exe" -start'
Creates the following files on removable media
- <Drive name for removable media>:\archer.avi
- <Drive name for removable media>:\wrar520.exe
- <Drive name for removable media>:\tcm851ax32.exe
- <Drive name for removable media>:\skypesetup.exe
- <Drive name for removable media>:\cveuropeo.doc
- <Drive name for removable media>:\fi51.doc
- <Drive name for removable media>:\uep_form_786_bulletin_1726i602.doc
- <Drive name for removable media>:\ovp25012015.doc
- <Drive name for removable media>:\508softwareandos.doc
- <Drive name for removable media>:\testcertificate.cer
- <Drive name for removable media>:\contosoroot.cer
- <Drive name for removable media>:\chromesetup.exe
- <Drive name for removable media>:\contoso_1.cer
- <Drive name for removable media>:\contosoroot_1.cer
- <Drive name for removable media>:\dashborder_192.bmp
- <Drive name for removable media>:\dashborder_144.bmp
- <Drive name for removable media>:\dashborder_96.bmp
- <Drive name for removable media>:\dialmap.bmp
- <Drive name for removable media>:\toolbar.bmp
- <Drive name for removable media>:\000814251_video_01.avi
- <Drive name for removable media>:\correct.avi
- <Drive name for removable media>:\join.avi
- <Drive name for removable media>:\!!! all your files are encrypted !!!.txt
- <Drive name for removable media>:\sdkfailsafeemulator.cer
- <Drive name for removable media>:\jre-7u75-windows-i586-iftw.exe
Malicious functions
To complicate detection of its presence in the operating system,
deletes volume shadow copies.
Modifies file system
Creates the following files
- %TEMP%\9faf4c07.zeppelin
- C:\far2\fexcept\!!! all your files are encrypted !!!.txt
- C:\far2\encyclopedia\tap\!!! all your files are encrypted !!!.txt
- C:\far2\encyclopedia\!!! all your files are encrypted !!!.txt
- C:\far2\documentation\rus\!!! all your files are encrypted !!!.txt
- C:\far2\documentation\eng\!!! all your files are encrypted !!!.txt
- C:\far2\addons\xlat\russian\!!! all your files are encrypted !!!.txt
- C:\far2\addons\xlat\!!! all your files are encrypted !!!.txt
- C:\far2\addons\shell\!!! all your files are encrypted !!!.txt
- C:\far2\plugins\align\!!! all your files are encrypted !!!.txt
- C:\far2\addons\setup\!!! all your files are encrypted !!!.txt
- C:\far2\addons\colors\default_highlighting\!!! all your files are encrypted !!!.txt
- C:\far2\addons\colors\custom_highlighting\!!! all your files are encrypted !!!.txt
- C:\far2\addons\colors\!!! all your files are encrypted !!!.txt
- C:\far2\addons\!!! all your files are encrypted !!!.txt
- C:\far2\!!! all your files are encrypted !!!.txt
- <Current directory>\!!! all your files are encrypted !!!.txt
- %TEMP%\0ceb8b25.zeppelin
- %APPDATA%\microsoft\windows\trustedinstaller.exe
- C:\far2\addons\macros\!!! all your files are encrypted !!!.txt
- C:\far2\plugins\arclite\!!! all your files are encrypted !!!.txt
Deletes the following files
- %TEMP%\9faf4c07.zeppelin
- %TEMP%\0ceb8b25.zeppelin
Moves itself
- from <Full path to file> to <Full path to file>.3ab-841-864
Modifies user data files (Trojan.Encoder).
Changes user data files extensions (Trojan.Encoder).
Network activity
TCP
HTTP GET requests
- http://ge###tool.com/
- http://www.microsoft.com/pki/certs/MicRooCerAut_2010-06-23.crt
- http://ip###ger.org/17zCg7.jpg
UDP
- DNS ASK ge###tool.com
- DNS ASK ge###tatool.com
- DNS ASK microsoft.com
- DNS ASK ip###ger.org
Miscellaneous
Creates and executes the following
- '%APPDATA%\microsoft\windows\trustedinstaller.exe' -start
- '%APPDATA%\microsoft\windows\trustedinstaller.exe' -agent 0
- '%APPDATA%\microsoft\windows\trustedinstaller.exe' -agent 1
- '%APPDATA%\microsoft\windows\trustedinstaller.exe' -agent 2
- '%WINDIR%\syswow64\cmd.exe' /C bcdedit /set {default} bootstatuspolicy ignoreallfailures' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C bcdedit /set {default} recoveryenabled no' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete catalog -quiet' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete systemstatebackup' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete systemstatebackup -keepversions:0' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete backup' (with hidden window)
- '%WINDIR%\syswow64\cmd.exe' /C wmic shadowcopy delete' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' /C bcdedit /set {default} bootstatuspolicy ignoreallfailures
- '%WINDIR%\syswow64\cmd.exe' /C bcdedit /set {default} recoveryenabled no
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete catalog -quiet
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete systemstatebackup
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete systemstatebackup -keepversions:0
- '%WINDIR%\syswow64\cmd.exe' /C wbadmin delete backup
- '%WINDIR%\syswow64\cmd.exe' /C wmic shadowcopy delete
