Trojan.DownLoader17.36557

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'Print Controls IPsec Human Credential Internet' = '<SYSTEM32>\hciyduk.exe'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\Internet Cache Browser Experience] 'Start' = '00000002'

Malicious functions:

To complicate detection of its presence in the operating system,

blocks the following features:

Windows Security Center

Creates and executes the following:

'<SYSTEM32>\nrwglnqiz.exe' "<SYSTEM32>\hciyduk.exe"
'%WINDIR%\Temp\etydxkp2qd8g7.exe' -r 35481 tcp
'%TEMP%\etydxkp2l71g7nsucxu.exe'
'<SYSTEM32>\hciyduk.exe'

Modifies file system :

Creates the following files:

<SYSTEM32>\iyvwtwldykqhz\run
<SYSTEM32>\iyvwtwldykqhz\rng
%WINDIR%\Temp\etydxkp2qd8g7.exe
<SYSTEM32>\iyvwtwldykqhz\cfg
<SYSTEM32>\nrwglnqiz.exe
%TEMP%\etydxkp2l71g7nsucxu.exe
<SYSTEM32>\iyvwtwldykqhz\tst
<SYSTEM32>\hciyduk.exe
<SYSTEM32>\iyvwtwldykqhz\etc

Sets the 'hidden' attribute to the following files:

<SYSTEM32>\nrwglnqiz.exe
<SYSTEM32>\hciyduk.exe

Deletes the following files:

%WINDIR%\Temp\etydxkp2qd8g7.exe
<DRIVERS>\etc\hosts
%TEMP%\etydxkp2l71g7nsucxu.exe

Substitutes the HOSTS file.

Network activity:

Connects to:

'fr###raise.net':80
'of###raise.net':80
'fr###croud.net':80
'of###croud.net':80
'fr###reach.net':80
'se####bercroud.net':80
'se####berraise.net':80
'of###reach.net':80
'se####berprice.net':80
'sp###croud.net':80
'we###aise.net':80
'sp###price.net':80
'we###roud.net':80
'sp###raise.net':80
'fr###price.net':80
'of###price.net':80
'we###each.net':80
'sp###reach.net':80
'de###roud.net':80
'ro###roud.net':80
'de###rice.net':80
'ro###rice.net':80
'de###aise.net':80
'ro###each.net':80
'wr###price.net':80
'ro###aise.net':80
'de###each.net':80
'wi###rice.net':80
'jo###roud.net':80
'se####berreach.net':80
'jo###rice.net':80
'wi###roud.net':80
'jo###each.net':80
'wi###each.net':80
'jo###aise.net':80
'wi###aise.net':80
'we###rice.net':80
'ro###orn.net':80
'wr###cloth.net':80
'ro###ugust.net':80
'de###orn.net':80
'ma###loth.net':80
'wr###august.net':80
'ma###ugust.net':80
'wr###paid.net':80
'ma###aid.net':80
'be##lxc.com':80
'de###lxc.com':80
'ri###nstorm.net':80
'af###sllc.com':80
'de###loth.net':80
'ro###aid.net':80
'de###ugust.net':80
'ro###loth.net':80
'de###aid.net':80
'mu###price.net':80
'ya###roud.net':80
'ha###each.net':80
'ya###rice.net':80
'mu###croud.net':80
'ya###each.net':80
'mu###reach.net':80
'ya###aise.net':80
'mu###raise.net':80
'hu###price.net':80
'ha###rice.net':80
'wr###born.net':80
'ma###orn.net':80
'hu###croud.net':80
'ha###aise.net':80
'hu###reach.net':80
'ha###roud.net':80
'hu###raise.net':80

TCP:

HTTP GET requests:

http://fr###raise.net/index.php
http://of###raise.net/index.php
http://fr###croud.net/index.php
http://of###croud.net/index.php
http://fr###reach.net/index.php
http://se####bercroud.net/index.php
http://se####berraise.net/index.php
http://of###reach.net/index.php
http://se####berprice.net/index.php
http://sp###croud.net/index.php
http://we###aise.net/index.php
http://sp###price.net/index.php
http://we###roud.net/index.php
http://sp###raise.net/index.php
http://fr###price.net/index.php
http://of###price.net/index.php
http://we###each.net/index.php
http://sp###reach.net/index.php
http://de###roud.net/index.php
http://ro###roud.net/index.php
http://de###rice.net/index.php
http://ro###rice.net/index.php
http://de###aise.net/index.php
http://ro###each.net/index.php
http://wr###price.net/index.php
http://ro###aise.net/index.php
http://de###each.net/index.php
http://wi###rice.net/index.php
http://jo###roud.net/index.php
http://se####berreach.net/index.php
http://jo###rice.net/index.php
http://wi###roud.net/index.php
http://jo###each.net/index.php
http://wi###each.net/index.php
http://jo###aise.net/index.php
http://wi###aise.net/index.php
http://we###rice.net/index.php
http://ro###orn.net/index.php
http://wr###cloth.net/index.php
http://ro###ugust.net/index.php
http://de###orn.net/index.php
http://ma###loth.net/index.php
http://wr###august.net/index.php
http://ma###ugust.net/index.php
http://wr###paid.net/index.php
http://ma###aid.net/index.php
http://be##lxc.com/index.php
http://de###lxc.com/index.php
http://ri###nstorm.net/index.php
http://af###sllc.com/index.php
http://de###loth.net/index.php
http://ro###aid.net/index.php
http://de###ugust.net/index.php
http://ro###loth.net/index.php
http://de###aid.net/index.php
http://mu###price.net/index.php
http://ya###roud.net/index.php
http://ha###each.net/index.php
http://ya###rice.net/index.php
http://mu###croud.net/index.php
http://ya###each.net/index.php
http://mu###reach.net/index.php
http://ya###aise.net/index.php
http://mu###raise.net/index.php
http://hu###price.net/index.php
http://ha###rice.net/index.php
http://wr###born.net/index.php
http://ma###orn.net/index.php
http://hu###croud.net/index.php
http://ha###aise.net/index.php
http://hu###reach.net/index.php
http://ha###roud.net/index.php
http://hu###raise.net/index.php

UDP:

DNS ASK fr###raise.net
DNS ASK of###raise.net
DNS ASK fr###croud.net
DNS ASK of###croud.net
DNS ASK fr###reach.net
DNS ASK se####bercroud.net
DNS ASK se####berraise.net
DNS ASK of###reach.net
DNS ASK se####berprice.net
DNS ASK sp###croud.net
DNS ASK we###aise.net
DNS ASK sp###price.net
DNS ASK we###roud.net
DNS ASK sp###raise.net
DNS ASK fr###price.net
DNS ASK of###price.net
DNS ASK we###each.net
DNS ASK sp###reach.net
DNS ASK se####berreach.net
DNS ASK ro###roud.net
DNS ASK de###aise.net
DNS ASK ro###rice.net
DNS ASK de###roud.net
DNS ASK ro###aise.net
DNS ASK wr###price.net
DNS ASK ma###rice.net
DNS ASK de###each.net
DNS ASK ro###each.net
DNS ASK jo###roud.net
DNS ASK wi###roud.net
DNS ASK jo###rice.net
DNS ASK wi###rice.net
DNS ASK jo###aise.net
DNS ASK wi###each.net
DNS ASK de###rice.net
DNS ASK wi###aise.net
DNS ASK jo###each.net
DNS ASK we###rice.net
DNS ASK ro###orn.net
DNS ASK wr###cloth.net
DNS ASK ro###ugust.net
DNS ASK de###orn.net
DNS ASK ma###loth.net
DNS ASK wr###august.net
DNS ASK ma###ugust.net
DNS ASK wr###paid.net
DNS ASK ma###aid.net
DNS ASK be##lxc.com
DNS ASK de###lxc.com
DNS ASK ri###nstorm.net
DNS ASK af###sllc.com
DNS ASK de###loth.net
DNS ASK ro###aid.net
DNS ASK de###ugust.net
DNS ASK ro###loth.net
DNS ASK de###aid.net
DNS ASK mu###price.net
DNS ASK ya###roud.net
DNS ASK ha###each.net
DNS ASK ya###rice.net
DNS ASK mu###croud.net
DNS ASK ya###each.net
DNS ASK mu###reach.net
DNS ASK ya###aise.net
DNS ASK mu###raise.net
DNS ASK hu###price.net
DNS ASK ha###rice.net
DNS ASK wr###born.net
DNS ASK ma###orn.net
DNS ASK hu###croud.net
DNS ASK ha###aise.net
DNS ASK hu###reach.net
DNS ASK ha###roud.net
DNS ASK hu###raise.net
'23#.#55.255.250':1900

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