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permanent connection to bogus customer.worldstream.nl


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4 replies to this topic

#1 fraroy

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Posted 14 December 2013 - 10:35 PM

Hello,

 

A few weeks ago, my computer got infected after installing file
"cbsidlm-cbsi145-Revo_Uninstaller-ORG-10687648.exe". I was having problems
installing/uninstalling Microsoft Visual C++, a prerequisite for Lenovo's
backup software (Rescue & Recovery) and thought this software would help.
It installed an undocumented software which I removed promptly, but the
damage was already done.

I confirmed the computer was infected when I saw a tcp connection permanently
opened to "customer.worldstream.nl", which did not resolve when doing a
nslookup ! So the malware changed the hosts config file on my computer...

I did a seach on Internet and found a similar case documented here:

https://forums.malwarebytes.org/index.php?showtopic=85808

And the solution was to run combofix.exe, which I did, without reading all
documentation. Combofix seems to have corrected the problem, but I'm wondering
what was the malware and if there is any way to assess the damage done. I have
the output log of combofix that I can upload if needed. I attached the output
file of DDS, which I ran after combofix, so it might not be of any use.

Any help would be greatly appreciated on how to identify the virus/malware that
compromised my system.

 

François

Attached Files

  • Attached File  dds.txt   32.07KB   2 downloads


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#2 nasdaq

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Posted 18 December 2013 - 09:10 AM

Hello, Welcome to BleepingComputer.
I'm nasdaq and will be helping you.

If you can please print this topic it will make it easier for you to follow the instructions and complete all of the necessary steps in the order listed.
===

Nothing suspicious was found on your DDS logs.
Lets check further.

Search and delete the AdWare, PUP (Potentially Unwanted Program) installed on your computer.

Please download AdwCleaner by Xplode onto your Desktop.
  • Close all open programs and internet browsers.
  • Double click on AdwCleaner.exe to run the tool.
  • Click the Scan button and wait for the process to complete.
  • Click the Report button and the report will open in Notepad.
IMPORTANT
  • If you click the Clean button all items listed in the report will be removed.
If you find some false positive items or programs that you wish to keep, Close the AdwCleaner windows.
  • Close all open programs and internet browsers.
  • Double click on AdwCleaner.exe to run the tool.
  • Click the Scan button and wait for the process to complete.
  • Check off the element(s) you wish to keep.
  • Click on the Clean button follow the prompts.
  • A log file will automatically open after the scan has finished.
  • Please post the content of that log file with your next answer.
  • You can find the log file at C:\AdwCleaner[Sn].txt (n is a number).
thisisujrt.gif Please download
Junkware Removal Tool to your Desktop.
  • Please close your security software to avoid potential conflicts.
  • Run the tool by double-clicking it. If you are using Windows Vista or 7, right-mouse click it and select Run as administrator.
  • The tool will open and start scanning your system.
  • Please be patient as this can take a while to complete, depending on your system's specifications.
  • On completion, a log (JRT.txt) is saved to your Desktop and will automatically open.
  • Please post the contents of JRT.txt into your reply.
===

Third party programs if not up to date can be the cause of infiltration an infection.

Please restart the computer before running this security check.

Download Security Check by screen317 from here.
  • Save it to your Desktop.
  • Double click SecurityCheck.exe and follow the onscreen instructions inside of the black box.
  • A Notepad document should open automatically called checkup.txt; please post the contents of that document.
p.s.
If the SecurityCheck program fails to run for any reason, run it as an Administrator.
===

Please paste the logs in your next reply, DO NOT ATTACH THEM
Let me know what problem persists.

#3 fraroy

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Posted 21 December 2013 - 11:47 AM

Nasdaq,

 

Thanks for helping. I ran the three suggested utilities, and pasted the outputs below. As I mentionned in the first post, I ran

combofix PRIOR to DDS, and since combofix performed many correctives actions (I can post the log if needed), it's to be

expected that DDS did not find anything suspicious.

 

While I was infected prior to running combofix, I'd like to know what was the malware and the damage done.

 

François

 

adwcleaner output:

 

# AdwCleaner v3.015 - Rapport créé le 21/12/2013 à 11:03:29
# Mis à jour le 10/12/2013 par Xplode
# Système d'exploitation : Windows 7 Professional Service Pack 1 (64 bits)
# Nom d'utilisateur : ROYFR11 - T410S-FRANÇOIS
# Exécuté depuis : G:\logiciels-intel\AdwCleaner.exe
# Option : Nettoyer

***** [ Services ] *****


***** [ Fichiers / Dossiers ] *****

Fichier Supprimé : C:\Users\ROYFR11\AppData\Roaming\Mozilla\Firefox\Profiles\dqaqu11o.default\searchplugins\Askcom.xml
Fichier Supprimé : C:\Users\ROYFR11\AppData\Roaming\Mozilla\Firefox\Profiles\dqaqu11o.default\user.js

***** [ Raccourcis ] *****


***** [ Registre ] *****

Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\apnstub_RASAPI32
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\apnstub_RASMANCS
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\askchecker_RASAPI32
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\askchecker_RASMANCS
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\askpartnercobrandingtool_rasapi32
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\askpartnercobrandingtool_rasmancs
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\AskSLib_RASAPI32
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\AskSLib_RASMANCS
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\TaskScheduler_RASAPI32
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Tracing\TaskScheduler_RASMANCS
Clé Supprimée : HKLM\SOFTWARE\Classes\CLSID\{1AA60054-57D9-4F99-9A55-D0FBFBE7ECD3}
Clé Supprimée : HKLM\SOFTWARE\Classes\CLSID\{AE805869-2E5C-4ED4-8F7B-F1F7851A4497}
Clé Supprimée : HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Explorer\Browser Helper Objects\{AE805869-2E5C-4ED4-8F7B-F1F7851A4497}
Clé Supprimée : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Stats\{AE805869-2E5C-4ED4-8F7B-F1F7851A4497}
Clé Supprimée : HKCU\Software\Microsoft\Windows\CurrentVersion\Ext\Settings\{AE805869-2E5C-4ED4-8F7B-F1F7851A4497}
Clé Supprimée : HKCU\Software\YahooPartnerToolbar
Donnée Supprimée : HKCU\Software\Microsoft\Windows\CurrentVersion\Internet Settings [ProxyOverride] - *.local;127.0.0.1:9421;<local>

***** [ Navigateurs ] *****

-\\ Internet Explorer v10.0.9200.16736


-\\ Mozilla Firefox v13.0.1 (fr)

[ Fichier : C:\Users\ROYFR11\AppData\Roaming\Mozilla\Firefox\Profiles\dqaqu11o.default\prefs.js ]


*************************

AdwCleaner[R0].txt - [2372 octets] - [21/12/2013 10:56:10]
AdwCleaner[S0].txt - [2389 octets] - [21/12/2013 11:03:29]

########## EOF - C:\AdwCleaner\AdwCleaner[S0].txt - [2449 octets] ##########

 

 

jrt output:

 

~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Junkware Removal Tool (JRT) by Thisisu
Version: 6.0.8 (11.05.2013:1)
OS: Windows 7 Professional x64
Ran by ROYFR11 on 2013-12-21 at 11:15:05,68
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~




~~~ Services



~~~ Registry Values



~~~ Registry Keys



~~~ Files



~~~ Folders



~~~ Event Viewer Logs were cleared





~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~
Scan was completed on 2013-12-21 at 11:20:35,03
End of JRT log
~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~~

 

 

securitycheck output:

 

 Results of screen317's Security Check version 0.99.77  
 Windows 7 Service Pack 1 x64 (UAC is enabled)  
 Internet Explorer 10 Out of date!
``````````````Antivirus/Firewall Check:``````````````
 WMI entry may not exist for antivirus; attempting automatic update.
`````````Anti-malware/Other Utilities Check:`````````
 Java 7 Update 21  
 JaVaWa GMTK 3.1   
 Java version out of Date!
 Adobe Flash Player 11.7.700.202  
 Adobe Reader 9  
 Adobe Reader XI  
 Mozilla Firefox 13.0.1 Firefox out of Date!  
 Mozilla Thunderbird (3.1.7) Thunderbird out of Date!  
````````Process Check: objlist.exe by Laurent````````  
`````````````````System Health check`````````````````
 Total Fragmentation on Drive C: =
````````````````````End of Log``````````````````````



#4 nasdaq

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Posted 21 December 2013 - 01:13 PM

A few weeks ago, my computer got infected after installing file
"cbsidlm-cbsi145-Revo_Uninstaller-ORG-10687648.exe".



I have no way of knowing what type of infection you got.
Looks like some redirects to the site installed by the 3rd party software.

Revo uninstaller should behave been downloaded from the original site.
Revo Uninstaller.
===

Secure your system by updating 3rd party programs.

Your version of Java is outdated and needs to be updated to take advantage of fixes that have eliminated security vulnerabilities.
Latest version is Java JRE 7u45 was released on Oct. 15. 2013.

Be careful not to install malware posing as Java update!
Important read this blog.
http://blog.trendmicro.com/trendlabs-security-intelligence/malware-poses-as-an-update-for-java-0-day-fix/

Quoted from the page.
"In light of the recent events surrounding Java, users must seriously consider their use of Java. Do they really need it? If yes, make sure that users follow the steps we recommended and get the security update directly from the official oracle website." at:
http://www.oracle.com/technetwork/java/javase/downloads/index.html

How to disable Java in your browsers
http://www.infoworld.com/t/web-browsers/how-disable-java-in-your-browsers-210882

You can manually check your present version and update as recommended.
https://www.java.com/en/download/installed.jsp

If present remove the old version(s) of Java using the Add/Remove Programs applet.

Java 7 Update 21

Note
Java security update installs Ask Toolbar by default -- a single click in a multi-step installer.
http://www.benedelman.org/images/iac-jan13/ask-iac-011613-small.png
I suggest that your un-check the box "Install the Ask Toolbar" before proceeding.

===

Flash 11.9.900.170 released
Dec 10, 2013.

Critical vulnerabilities have been identified in old version of Adobe Flash Player please get the latest version.

Summary: Adobe has released security updates for Adobe Flash Player 11.9.900.152 and earlier versions for Windows and Macintosh and Adobe Flash Player 11.2.202.327 and earlier versions for Linux. These updates address vulnerabilities that could cause a crash and potentially allow an attacker to take control of the affected system.

Flash test site:
http://www.adobe.com/software/flash/about/

Flash Player Help / Find version
http://helpx.adobe.com/flash-player/kb/find-version-flash-player.html#main_Find_the_Flash_Player_version_installed_on_your_machine

===

If all is well:

Time for some housekeeping
  • The following will implement some cleanup procedures as well as reset System Restore points:
  • Click Start > Run and copy/paste the following bold text into the Run box and click OK:
  • ComboFix /Uninstall
===


Please consider using these ideas to help secure your computer. While there is no way to guarantee safety when you use a computer, these steps will make it much less likely that you will need to endure another infection. While we really like to help people, we would rather help you protect yourself so that you won't need that help in the future.

Please either enable Automatic Updates under Start -> Control Panel -> Automatic Updates or get into the habit of checking Windows Update regularly. They usually have security updates every month. You can set Windows to notify you of Updates so that you can choose, but only do this if you believe you are able to understand which ones are needed. This is a crucial security measure.

Having an effective antivirus is a must for everyone.
In addition to many excellent commercial products there are plenty of good free antivirus programs available. I can recommend:

If you are satisfied with your current protection programs you can ignore the instructions on Antivirus or Firewall listed below.In addition to an antivirus I recommend using a firewall. A software firewall is a software program that helps screen out hackers, viruses, and worms that try to reach your computer over the Internet. I can recommend one of the following free products:Please note: Many installer offer third-party downloads that are installed automatically when you do not uncheck certain checkboxes. While most of the time not being malicious you usually do not want these on your computer. Be careful during the installation process and you will avoid seeing tons of new unwanted toolbars in your favorite web browser.

Please consider installing and running some of the following programs; they are either free or have free versions of commercial programs:

Malwarebytes Anti-Malware (MBAM)
The free version of MBAM can be used to scan the system for traces of malware. Scanning your system regularly will make it harder for malware to reside on your system.
A tutorial on using MBAM can be found here.
Please Note: Only the paid for version has real time capabilities.

SpywareBlaster
A tutorial on using SpywareBlaster to prevent malware from ever installing on your computer may be found here.

Please keep these programs up-to-date and run them whenever you suspect a problem to prevent malware problems. A number of programs have resident protection and it is a good idea to run the resident protection of one of each type of program to maintain protection. However, it is important to run only one resident program of each type since they can conflict and become less effective. That means only one antivirus, firewall and scanning anti-spyware program at a time. Passive protectors, like SpywareBlaster can be run with any of them.

Note that there are a lot of rogue programs out there that want to scare you into giving them your money and some malware actually claims to be security programs. If you get a popup for a security program that you did not install yourself, do NOT click on it and ask for help immediately. It is very important to run an antivirus and firewall, but you can't always rely on reviews and ads for information. Ask in a security forum that you trust if you are not sure. If you are unsure and looking for anti-spyware programs, you can find out if it is a rogue here:A similar category of programs is now called "scareware." Scareware programs are active infections that will pop-up on your computer and tell you that you are infected. If you look closely, it will usually have a name that looks like it might be legitimate, but it is NOT one of the programs you installed. It tells you to click and install it right away. If you click on any part of it, including the 'X' to close it, you may actually help it infect your computer further. Keeping protection updated and running resident protection can help prevent these infections. If it happens anyway, get offline as quickly as you can. Pull the internet connection cable or shut down the computer if you have to. Contact someone to help by using another computer if possible. These programs are also sometimes called 'rogues', but they are different than the older version of rogues mentioned above.

Please keep your programs up to date. This applies to Java, Adobe Flashplayer, Adobe Reader and your Internet Browsers in particular. Vulnerabilities in these programs are often exploited in order to install malware on your PC. Visiting a prepared web page suffices to infect your system.

In general Firefox, Opera and Google Chrome are considered to be more secure than Internet Explorer. In addition there are many useful add-ons that can protect you from possible risks:
  • WOT will warn you when you try to visit sites with poor reputation. The reputation is based on user ratings and is usually very accurate.
  • Script Blocker can help blocking many attempts to infect your system via malicious websites by only allowing scripts at sites you trust.
  • NoScript is a popular Firefox addon,
  • ScriptNo a popular Google Chrome addon.
For much more useful information, please also read Tony Klein's excellent article: How did I get infected in the first place

Hopefully these steps will help to keep you error free. If you run into more difficulty, we will certainly do what we can to help.
===

#5 nasdaq

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Posted 27 December 2013 - 10:39 AM

It appears that this issue is resolved, therefore I am closing the topic. If that is not the case and you need or wish to continue with this topic, please send me or any Moderator a Personal Message (PM) that you would like this topic re-opened.




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