Trojan.DownLoader23.52111

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'CNG Detection Log Interactive CardSpace' = '<SYSTEM32>\dcxpbubnxjd.exe'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\Workstation ActiveX Program] 'ImagePath' = '<SYSTEM32>\dcxpbubnxjd.exe'
[<HKLM>\SYSTEM\ControlSet001\Services\Workstation ActiveX Program] 'Start' = '00000002'

Malicious functions:

To complicate detection of its presence in the operating system,

blocks the following features:

Windows Security Center

Executes the following:

'<SYSTEM32>\trwjgxsdisxh.exe' "<SYSTEM32>\dcxpbubnxjd.exe"
'%WINDIR%\Temp\df6dmo332iqdc.exe' -r 44790 tcp
'%TEMP%\df6dmo32ss1dcmfeftbz.exe'
'<SYSTEM32>\dcxpbubnxjd.exe'

Modifies file system:

Creates the following files:

<SYSTEM32>\qvvlbvetroaohd\run
<SYSTEM32>\qvvlbvetroaohd\rng
%WINDIR%\Temp\df6dmo332iqdc.exe
<SYSTEM32>\qvvlbvetroaohd\cfg
<SYSTEM32>\trwjgxsdisxh.exe
%TEMP%\df6dmo32ss1dcmfeftbz.exe
<SYSTEM32>\qvvlbvetroaohd\tst
<SYSTEM32>\dcxpbubnxjd.exe
<SYSTEM32>\qvvlbvetroaohd\etc

Sets the 'hidden' attribute to the following files:

<SYSTEM32>\trwjgxsdisxh.exe
<SYSTEM32>\dcxpbubnxjd.exe

Deletes the following files:

%WINDIR%\Temp\df6dmo332iqdc.exe
<DRIVERS>\etc\hosts
%TEMP%\df6dmo32ss1dcmfeftbz.exe

Substitutes the HOSTS file.

Network activity:

Connects to:

'dr###rule.net':80
'na###ule.net':80
'na###unt.net':80
'na###how.net':80
'dr###hunt.net':80
'dr###hear.net':80
'fi###monday.net':80
'qu###monday.net':80
'qu###under.net':80
'na###ear.net':80
'fi###under.net':80
'we####dayshow.net':80
'se###unt.net':80
'se###how.net':80
'af###hear.net':80
'fo###hear.net':80
'we####dayhunt.net':80
'we####dayhear.net':80
'dr###show.net':80
'se###ear.net':80
'se###ule.net':80
'we####dayrule.net':80
'le###monday.net':80
'fa###onday.net':80
'fa###nder.net':80
'ga###end.net':80
'le###under.net':80
'le###feed.net':80
'mo###under.net':80
'wa###nder.net':80
'fa###end.net':80
'fa###eed.net':80
'le###lend.net':80
'qu###lend.net':80
'bo###nder.net':80
'fi###lend.net':80
'fi###feed.net':80
'qu###feed.net':80
'ga###nder.net':80
'ga###eed.net':80
'bo###end.net':80
'bo###eed.net':80
'bo###onday.net':80
'ga###onday.net':80
'fo###rule.net':80
'ga###ear.net':80
'le###show.net':80
'bo###ear.net':80
'bo###ule.net':80
'ga###ule.net':80
'fa###how.net':80
'fa###ule.net':80
'le###hear.net':80
'le###rule.net':80
'le###hunt.net':80
'fa###unt.net':80
'de###lxc.com':80
'qu###rule.net':80
'be##lxc.com':80
'ri###nstorm.net':80
'af###sllc.com':80
'fi###hear.net':80
'bo###unt.net':80
'ga###unt.net':80
'ga###how.net':80
'qu###hear.net':80
'bo###how.net':80
'we###ule.net':80
'st###hear.net':80
'st###rule.net':80
'st###hunt.net':80
'we###unt.net':80
'we###ear.net':80
'fo###hunt.net':80
'af###rule.net':80
'af###hunt.net':80
'af###show.net':80
'fo###show.net':80
'mo###hunt.net':80
'wa###unt.net':80
'wa###how.net':80
'fa###ear.net':80
'mo###show.net':80
'mo###rule.net':80
'st###show.net':80
'we###how.net':80
'wa###ear.net':80
'wa###ule.net':80
'mo###hear.net':80

TCP:

HTTP GET requests:

http://dr###rule.net/index.php
http://na###ule.net/index.php
http://na###unt.net/index.php
http://na###how.net/index.php
http://dr###hunt.net/index.php
http://dr###hear.net/index.php
http://fi###monday.net/index.php
http://qu###monday.net/index.php
http://qu###under.net/index.php
http://na###ear.net/index.php
http://fi###under.net/index.php
http://we####dayshow.net/index.php
http://se###unt.net/index.php
http://se###how.net/index.php
http://af###hear.net/index.php
http://fo###hear.net/index.php
http://we####dayhunt.net/index.php
http://we####dayhear.net/index.php
http://dr###show.net/index.php
http://se###ear.net/index.php
http://se###ule.net/index.php
http://we####dayrule.net/index.php
http://le###monday.net/index.php
http://fa###onday.net/index.php
http://fa###nder.net/index.php
http://ga###end.net/index.php
http://le###under.net/index.php
http://le###feed.net/index.php
http://mo###under.net/index.php
http://wa###nder.net/index.php
http://fa###end.net/index.php
http://fa###eed.net/index.php
http://le###lend.net/index.php
http://qu###lend.net/index.php
http://bo###nder.net/index.php
http://fi###lend.net/index.php
http://fi###feed.net/index.php
http://qu###feed.net/index.php
http://ga###nder.net/index.php
http://ga###eed.net/index.php
http://bo###end.net/index.php
http://bo###eed.net/index.php
http://bo###onday.net/index.php
http://ga###onday.net/index.php
http://fo###rule.net/index.php
http://ga###ear.net/index.php
http://le###show.net/index.php
http://bo###ear.net/index.php
http://bo###ule.net/index.php
http://ga###ule.net/index.php
http://fa###how.net/index.php
http://fa###ule.net/index.php
http://le###hear.net/index.php
http://le###rule.net/index.php
http://le###hunt.net/index.php
http://fa###unt.net/index.php
http://de###lxc.com/index.php
http://qu###rule.net/index.php
http://be##lxc.com/index.php
http://ri###nstorm.net/index.php
http://af###sllc.com/index.php
http://fi###hear.net/index.php
http://bo###unt.net/index.php
http://ga###unt.net/index.php
http://ga###how.net/index.php
http://qu###hear.net/index.php
http://bo###how.net/index.php
http://we###ule.net/index.php
http://st###hear.net/index.php
http://st###rule.net/index.php
http://st###hunt.net/index.php
http://we###unt.net/index.php
http://we###ear.net/index.php
http://fo###hunt.net/index.php
http://af###rule.net/index.php
http://af###hunt.net/index.php
http://af###show.net/index.php
http://fo###show.net/index.php
http://mo###hunt.net/index.php
http://wa###unt.net/index.php
http://wa###how.net/index.php
http://fa###ear.net/index.php
http://mo###show.net/index.php
http://mo###rule.net/index.php
http://st###show.net/index.php
http://we###how.net/index.php
http://wa###ear.net/index.php
http://wa###ule.net/index.php
http://mo###hear.net/index.php

UDP:

DNS ASK na###unt.net
DNS ASK dr###rule.net
DNS ASK dr###hunt.net
DNS ASK dr###show.net
DNS ASK na###how.net
DNS ASK na###ule.net
DNS ASK qu###under.net
DNS ASK fi###monday.net
DNS ASK fi###under.net
DNS ASK dr###hear.net
DNS ASK na###ear.net
DNS ASK se###how.net
DNS ASK we####dayshow.net
DNS ASK fo###hear.net
DNS ASK fo###rule.net
DNS ASK af###hear.net
DNS ASK se###unt.net
DNS ASK se###ear.net
DNS ASK we####dayhear.net
DNS ASK we####dayrule.net
DNS ASK we####dayhunt.net
DNS ASK se###ule.net
DNS ASK qu###monday.net
DNS ASK le###monday.net
DNS ASK fa###onday.net
DNS ASK fa###nder.net
DNS ASK ga###end.net
DNS ASK le###under.net
DNS ASK le###feed.net
DNS ASK mo###under.net
DNS ASK wa###nder.net
DNS ASK fa###end.net
DNS ASK fa###eed.net
DNS ASK le###lend.net
DNS ASK qu###lend.net
DNS ASK bo###nder.net
DNS ASK fi###lend.net
DNS ASK fi###feed.net
DNS ASK qu###feed.net
DNS ASK ga###nder.net
DNS ASK ga###eed.net
DNS ASK bo###end.net
DNS ASK bo###eed.net
DNS ASK bo###onday.net
DNS ASK ga###onday.net
DNS ASK ga###ear.net
DNS ASK le###show.net
DNS ASK bo###ear.net
DNS ASK bo###ule.net
DNS ASK ga###ule.net
DNS ASK fa###how.net
DNS ASK fa###ule.net
DNS ASK le###hear.net
DNS ASK le###rule.net
DNS ASK le###hunt.net
DNS ASK fa###unt.net
DNS ASK de###lxc.com
DNS ASK qu###rule.net
DNS ASK be##lxc.com
DNS ASK ri###nstorm.net
DNS ASK af###sllc.com
DNS ASK fi###hear.net
DNS ASK bo###unt.net
DNS ASK ga###unt.net
DNS ASK ga###how.net
DNS ASK qu###hear.net
DNS ASK bo###how.net
DNS ASK we###ule.net
DNS ASK st###hear.net
DNS ASK st###rule.net
DNS ASK st###hunt.net
DNS ASK we###unt.net
DNS ASK we###ear.net
DNS ASK fo###hunt.net
DNS ASK af###rule.net
DNS ASK af###hunt.net
DNS ASK af###show.net
DNS ASK fo###show.net
DNS ASK mo###hunt.net
DNS ASK wa###unt.net
DNS ASK wa###how.net
DNS ASK fa###ear.net
DNS ASK mo###show.net
DNS ASK mo###rule.net
DNS ASK st###show.net
DNS ASK we###how.net
DNS ASK wa###ear.net
DNS ASK wa###ule.net
DNS ASK mo###hear.net
'23#.#55.255.250':1900

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