Trojan.DownLoader23.30409

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] 'IP WinHTTP Presentation List Collector' = '<SYSTEM32>\mfmivkbwlado.exe'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\Brightness Function Portable] 'ImagePath' = '<SYSTEM32>\mfmivkbwlado.exe'
[<HKLM>\SYSTEM\ControlSet001\Services\Brightness Function Portable] '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>\teiebbvq.exe' "<SYSTEM32>\mfmivkbwlado.exe"
'%WINDIR%\Temp\ipdli0t2m0jxwil.exe' -r 32014 tcp
'%TEMP%\ipdli0t2gboxwilk3q3of.exe'
'<SYSTEM32>\mfmivkbwlado.exe'

Modifies file system:

Creates the following files:

<SYSTEM32>\sponnyms\run
<SYSTEM32>\sponnyms\rng
%WINDIR%\Temp\ipdli0t2m0jxwil.exe
<SYSTEM32>\sponnyms\cfg
<SYSTEM32>\teiebbvq.exe
%TEMP%\ipdli0t2gboxwilk3q3of.exe
<SYSTEM32>\sponnyms\tst
<SYSTEM32>\mfmivkbwlado.exe
<SYSTEM32>\sponnyms\etc

Sets the 'hidden' attribute to the following files:

<SYSTEM32>\teiebbvq.exe
<SYSTEM32>\mfmivkbwlado.exe

Deletes the following files:

%WINDIR%\Temp\ipdli0t2m0jxwil.exe
<DRIVERS>\etc\hosts
%TEMP%\ipdli0t2gboxwilk3q3of.exe

Substitutes the HOSTS file.

Network activity:

Connects to:

'ar###sound.net':80
'so###sound.net':80
'ar###green.net':80
'so###green.net':80
'up###ift.net':80
'wh###lift.net':80
'ar###hand.net':80
'so###hand.net':80
'so###lift.net':80
'th###ail.net':80
'dr###wore.net':80
'th###oad.net':80
'dr###mail.net':80
'th###here.net':80
'ar###lift.net':80
'th###ore.net':80
'dr###where.net':80
'up###reen.net':80
'sp###and.net':80
'sa###and.net':80
'sp###ound.net':80
'sa###ound.net':80
'gl###reen.net':80
'ta###green.net':80
'gl###ift.net':80
'ta###lift.net':80
'sa###reen.net':80
'wh###sound.net':80
'up###and.net':80
'wh###green.net':80
'up###ound.net':80
'sa###ift.net':80
'sp###reen.net':80
'wh###hand.net':80
'sp###ift.net':80
'gr###road.net':80
'eq###mail.net':80
'ta###where.net':80
'eq###road.net':80
'gr###wore.net':80
'eq###where.net':80
'gr###mail.net':80
'eq###wore.net':80
'gl###here.net':80
'th###while.net':80
'ef###tbuilt.net':80
'jo####ymeasure.net':80
'ri###nstorm.net':80
'gl###ore.net':80
'ta###wore.net':80
'gl###ail.net':80
'ta###mail.net':80
'gr###where.net':80
'fa###ail.net':80
'wa###wore.net':80
'fa###oad.net':80
'wa###mail.net':80
'fa###here.net':80
'dr###road.net':80
'fa###ore.net':80
'wa###where.net':80
'wa###road.net':80
'sp###mail.net':80
'vi###mail.net':80
'sp###road.net':80
'vi###road.net':80
'sp###where.net':80
'vi###where.net':80
'sp###wore.net':80
'vi###wore.net':80

TCP:

HTTP GET requests:

http://ar###sound.net/index.php
http://so###sound.net/index.php
http://ar###green.net/index.php
http://so###green.net/index.php
http://up###ift.net/index.php
http://wh###lift.net/index.php
http://ar###hand.net/index.php
http://so###hand.net/index.php
http://so###lift.net/index.php
http://th###ail.net/index.php
http://dr###wore.net/index.php
http://th###oad.net/index.php
http://dr###mail.net/index.php
http://th###here.net/index.php
http://ar###lift.net/index.php
http://th###ore.net/index.php
http://dr###where.net/index.php
http://up###reen.net/index.php
http://sp###and.net/index.php
http://sa###and.net/index.php
http://sp###ound.net/index.php
http://sa###ound.net/index.php
http://gl###reen.net/index.php
http://ta###green.net/index.php
http://gl###ift.net/index.php
http://ta###lift.net/index.php
http://sa###reen.net/index.php
http://wh###sound.net/index.php
http://up###and.net/index.php
http://wh###green.net/index.php
http://up###ound.net/index.php
http://sa###ift.net/index.php
http://sp###reen.net/index.php
http://wh###hand.net/index.php
http://sp###ift.net/index.php
http://gr###road.net/index.php
http://eq###mail.net/index.php
http://ta###where.net/index.php
http://eq###road.net/index.php
http://gr###wore.net/index.php
http://eq###where.net/index.php
http://gr###mail.net/index.php
http://eq###wore.net/index.php
http://gl###here.net/index.php
http://th###while.net/index.php
http://ef###tbuilt.net/index.php
http://jo####ymeasure.net/index.php
http://ri###nstorm.net/index.php
http://gl###ore.net/index.php
http://ta###wore.net/index.php
http://gl###ail.net/index.php
http://ta###mail.net/index.php
http://gr###where.net/index.php
http://fa###ail.net/index.php
http://wa###wore.net/index.php
http://fa###oad.net/index.php
http://wa###mail.net/index.php
http://fa###here.net/index.php
http://dr###road.net/index.php
http://fa###ore.net/index.php
http://wa###where.net/index.php
http://wa###road.net/index.php
http://sp###mail.net/index.php
http://vi###mail.net/index.php
http://sp###road.net/index.php
http://vi###road.net/index.php
http://sp###where.net/index.php
http://vi###where.net/index.php
http://sp###wore.net/index.php
http://vi###wore.net/index.php

UDP:

DNS ASK ar###sound.net
DNS ASK so###sound.net
DNS ASK ar###green.net
DNS ASK so###green.net
DNS ASK ar###hand.net
DNS ASK wh###lift.net
DNS ASK up###reen.net
DNS ASK so###hand.net
DNS ASK up###ift.net
DNS ASK th###ail.net
DNS ASK dr###wore.net
DNS ASK th###oad.net
DNS ASK dr###mail.net
DNS ASK th###ore.net
DNS ASK ar###lift.net
DNS ASK so###lift.net
DNS ASK dr###where.net
DNS ASK th###here.net
DNS ASK sp###and.net
DNS ASK sa###and.net
DNS ASK sp###ound.net
DNS ASK sa###ound.net
DNS ASK gl###ift.net
DNS ASK ta###green.net
DNS ASK gl###ound.net
DNS ASK ta###lift.net
DNS ASK gl###reen.net
DNS ASK wh###sound.net
DNS ASK up###and.net
DNS ASK wh###green.net
DNS ASK up###ound.net
DNS ASK wh###hand.net
DNS ASK sp###reen.net
DNS ASK sa###reen.net
DNS ASK sp###ift.net
DNS ASK sa###ift.net
DNS ASK gr###road.net
DNS ASK eq###mail.net
DNS ASK ta###where.net
DNS ASK eq###road.net
DNS ASK gr###wore.net
DNS ASK eq###where.net
DNS ASK gr###mail.net
DNS ASK eq###wore.net
DNS ASK gl###here.net
DNS ASK th###while.net
DNS ASK ef###tbuilt.net
DNS ASK jo####ymeasure.net
DNS ASK ri###nstorm.net
DNS ASK gl###ore.net
DNS ASK ta###wore.net
DNS ASK gl###ail.net
DNS ASK ta###mail.net
DNS ASK gr###where.net
DNS ASK fa###ail.net
DNS ASK wa###wore.net
DNS ASK fa###oad.net
DNS ASK wa###mail.net
DNS ASK fa###here.net
DNS ASK dr###road.net
DNS ASK fa###ore.net
DNS ASK wa###where.net
DNS ASK wa###road.net
DNS ASK sp###mail.net
DNS ASK vi###mail.net
DNS ASK sp###road.net
DNS ASK vi###road.net
DNS ASK sp###where.net
DNS ASK vi###where.net
DNS ASK sp###wore.net
DNS ASK vi###wore.net
'23#.#55.255.250':1900

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