Trojan.AVKill.7507

Trojan.AVKill.7507

Added to the Dr.Web virus database: 2011-06-22

Virus description added: 2011-07-02

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Clients\StartMenuInternet\IEXPLORE.EXE\shell\open\command] '' = '"<LS_APPDATA>\ieu.exe" -a "%PROGRAM_FILES%\Internet Explorer\iexplore.exe"'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] '1974914403' = '<LS_APPDATA>\ieu.exe'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'ctfmon.exe' = '<SYSTEM32>\ctfmon.exe'

Malicious functions:

To bypass firewall, removes or modifies the following registry keys:

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'EnableFirewall' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DoNotAllowExceptions' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile] 'DisableNotifications' = '00000001'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'EnableFirewall' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DoNotAllowExceptions' = '00000000'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile] 'DisableNotifications' = '00000001'

To complicate detection of its presence in the operating system,

blocks the following features:

Creates and executes the following:

Terminates or attempts to terminate

the following user processes:

Modifies file system :

Creates the following files:

%TEMP%\qn7xs4dp6av6hq06o682a2ns2iaj26ny4j7n7xsqvrc3d
%HOMEPATH%\Templates\qn7xs4dp6av6hq06o682a2ns2iaj26ny4j7n7xsqvrc3d
%ALLUSERSPROFILE%\Application Data\qn7xs4dp6av6hq06o682a2ns2iaj26ny4j7n7xsqvrc3d
<LS_APPDATA>\ieu.exe
<LS_APPDATA>\qn7xs4dp6av6hq06o682a2ns2iaj26ny4j7n7xsqvrc3d

Deletes itself.

Network activity:

Connects to:

UDP:

Miscellaneous:

Searches for the following windows: