W32/Brontok-J is an email worm for the Windows platform.
W32/Brontok-J attempts to send itself to email addresses harvested from the computer. It will also attempt to modify various Windows Explorer settings.
W32/Brontok-J will restart the computer if it finds a window title containing certain strings such as ".EXE".
W32/Brontok-J is a email worm for the Windows platform.
W32/Brontok-J attempts to send itself to email addresses harvested from the computer. It will also attempt to modify various Windows Explorer settings.
W32/Brontok-J will restart the computer if it finds a window title containing certain strings such as ".EXE".
When first run W32/Brontok-J copies itself to:
<User>\Local Settings\Application Data\br4941on.exe
<User>\Local Settings\Application Data\csrss.exe
<User>\Local Settings\Application Data\inetinfo.exe
<User>\Local Settings\Application Data\lsass.exe
<User>\Local Settings\Application Data\services.exe
<User>\Local Settings\Application Data\smss.exe
<User>\Local Settings\Application Data\svchost.exe
<User>\Start Menu\Startup\Empty.pif
<Windows>\KesenjanganSosial.exe
<Windows>\ShellNew\RakyatKelaparan.exe
<System>\cmd-brontok.exe
W32/Brontok-J will drop various files in My Docuement\My Pictures folder with message from the virus writer.
The following registry entries are created to run br4941on.exe and RakyatKelaparan.exe on startup:
HKCU\Software\Microsoft\Windows\CurrentVersion\Run
Tok-Cirrhatus-1959
<User>\Local Settings\Application Data\br4941on.exe
HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Run
Bron-Spizaetus
<Windows>\ShellNew\RakyatKelaparan.exe
The following registry entry is changed to run KesenjanganSosial.exe on startup:
HKLM\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon
Shell
Explorer.exe "<Windows>\KesenjanganSosial.exe"
(the default value for this registry entry is "Explorer.exe" which causes the Microsoft file <Windows>\Explorer.exe to be run on startup).
The following registry entry is set, disabling the registry editor (regedit):
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableRegistryTools
1
Registry entries are set as follows:
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\Explorer
NoFolderOptions
1
HKCU\Software\Microsoft\Windows\CurrentVersion\Policies\System
DisableCMD
0
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
Hidden
0
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
HideFileExt
1
HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced
ShowSuperHidden
0