BackDoor.IRC.Bot.1818

Added to the Dr.Web virus database: 2012-07-14

Virus description added: 2012-08-04

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Intel iDisplay Core' = '<SYSTEM32>\igfxbj32.exe'

Creates the following files on removable media:

<Drive name for removable media>:\Autorun.inf
<Drive name for removable media>:\~DeviceMon.{645FF040-5081-101B-9F08-00AA002F954E}\dev-i20673902.id

Malicious functions:

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

[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\DomainProfile\AuthorizedApplications\List] '<SYSTEM32>\igfxbj32.exe' = '<SYSTEM32>\igfxbj32.exe:*:Enabled:Intel iDisplay Core'
[<HKLM>\SYSTEM\ControlSet001\Services\SharedAccess\Parameters\FirewallPolicy\StandardProfile\AuthorizedApplications\List] '<SYSTEM32>\igfxbj32.exe' = '<SYSTEM32>\igfxbj32.exe:*:Enabled:Intel iDisplay Core'

Creates and executes the following:

<SYSTEM32>\igfxbj32.exe <Full path to virus>

Executes the following:

<SYSTEM32>\sc.exe stop OutpostFirewall
<SYSTEM32>\sc.exe delete ekrn
<SYSTEM32>\net1.exe stop ekrn
<SYSTEM32>\net.exe stop OutpostFirewall
<SYSTEM32>\sc.exe delete OutpostFirewall
<SYSTEM32>\net1.exe stop OutpostFirewall
<SYSTEM32>\sc.exe config OutpostFirewall start= disabled
<SYSTEM32>\sc.exe config ekrn start= disabled
<SYSTEM32>\sc.exe config NOD32krn start= disabled
<SYSTEM32>\sc.exe stop NOD32krn
<SYSTEM32>\net.exe stop NOD32krn
<SYSTEM32>\net1.exe stop NOD32krn
<SYSTEM32>\sc.exe stop ekrn
<SYSTEM32>\net.exe stop ekrn
<SYSTEM32>\sc.exe delete NOD32krn

Injects code into

the following system processes:

%WINDIR%\Explorer.EXE

Searches for windows to

detect analytical utilities:

ClassName: 'PROCMON_WINDOW_CLASS' WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'

detect programs and games:

ClassName: 'gdkWindowToplevel' WindowName: 'The Wireshark Network Analyzer'

Hides the following processes:

<Full path to virus>
<SYSTEM32>\igfxbj32.exe

Modifies file system :

Creates the following files:

%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\U98D4X8H\0xe2[1].txt
%HOMEPATH%\Local Settings\Temporary Internet Files\Content.IE5\KHMHGZ4F\0xe2[1].zip
<SYSTEM32>\igfxbj32.exe

Sets the 'hidden' attribute to the following files:

<SYSTEM32>\igfxbj32.exe

Deletes itself.

Network activity:

Connects to:

'66.##8.53.114':80
'45.##.235.77':8910
'1.##6.35.97':80

TCP:

HTTP GET requests:

66.##8.53.114/ip/0xe2.txt
1.##6.35.97/css/0xe2.zip

UDP:

DNS ASK xE###.3U07elszGN.su
DNS ASK jm########0.level6-co2-as85026.su
DNS ASK pt########0.level6-co2-as85026.su

Miscellaneous:

Searches for the following windows:

ClassName: 'TCPViewClass' WindowName: ''
ClassName: '#32770' WindowName: 'Regshot 1.8.2'
ClassName: 'PROCEXPL' WindowName: ''
ClassName: 'CNetmonMainFrame' WindowName: 'Microsoft Network Monitor 3.3'
ClassName: 'SmartSniff' WindowName: 'SmartSniff'
ClassName: 'CurrPorts' WindowName: 'CurrPorts'

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Technical Information

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