Welcome to Experts Exchange

Add your voice to the tech community where 5M+ people, just like you, are talking about what matters.

  • Help others & share knowledge
  • Earn cash & points
  • Learn & ask questions
Solved

Zero Access infection

Posted on 2013-01-05
11
884 Views
Last Modified: 2013-11-22
This workstation is running Win 7 Pro sp1. Automatic Update wasdisabled so I checked services.msc and discovered the services were missing. I have installed latest versions of rkill, rogue killer, tdsskiller, and malwarebytes. Rogue killer and rkill both report zero access root kit. tdsskiller found no infection. while booted to normal desktop using administrator user account I ran rkill and then ran Malware bytes which stopped responding in the middle of the scan. log files are attached. I have not deleted any files or registry entries yet.
RKreport-1--S-01052013-02d1015.txt
Rkill.txt
0
Comment
Question by:rettif9
  • 5
  • 4
  • 2
11 Comments
 
LVL 93

Expert Comment

by:John Hurst
ID: 38747089
Root kit viruses are very difficult to remove completely (or even remove at all). You have sufficient problem here to warrant backing up, formatting and then doing a fresh install of Windows. Then get a good, paid, commercial antivirus.

..... Thinkpads_User
0
 
LVL 7

Author Comment

by:rettif9
ID: 38747103
@ Thinkpads_user

I do understand your point but this is a business workstation. reconfiguration would require + 4 hours after OS install due to multiple 3rd party softwre. User had allowed AV to lapse. Found related post here; http://www.bleepingcomputer.com/forums/topic449600.html but
atapplies and what doesn't. Would like to attempt repair. please advise
0
 
LVL 7

Author Comment

by:rettif9
ID: 38747107
but (not sure what applies and what doesn't)
0
Free Tool: Postgres Monitoring System

A PHP and Perl based system to collect and display usage statistics from PostgreSQL databases.

One of a set of tools we are providing to everyone as a way of saying thank you for being a part of the community.

 
LVL 93

Accepted Solution

by:
John Hurst earned 250 total points
ID: 38747139
Most of the stuff in that article applies. You need to work through each section.

As you can tell from the length of the article and the responses, getting rid of a rootkit can take more time than re-installing Windows.

If you do decide to re-install, do not forget to delete all the partitions on the disk and start again. Otherwise the rootkit will just come back.

Please explain to the user that the damage could take longer to fix than re-installing.

Good luck. ... Thinkpads_User
0
 
LVL 7

Author Comment

by:rettif9
ID: 38747146
@ Thinkpads_User

I've seen a lot of your posts. Usually spot on. Thanks for the advice. I'll get back to you.
0
 
LVL 38

Assisted Solution

by:Gerwin Jansen, EE MVE
Gerwin Jansen, EE MVE earned 250 total points
ID: 38748458
Just a tip: Eset has a remover for zeroaccess / sirefef - see here: http://kb.eset.com/esetkb/index?page=content&id=SOLN2895

Maybe worth a try...
0
 
LVL 7

Author Comment

by:rettif9
ID: 38748759
@ Thinkpads_User and gerwinjansen

I followed the steps in the Bleeping Computer tutorial but Malwarebytes and Combofix (step 4) both stopped responding while running. Next I ran the Eset removal tool mentioned above. After this MS Updates started working but still couldn't run MWB. I noticed that MWB was hanging on a file in the Temporary Internet Files folder so I tried removing using IE which appeared to work but didn't fix the problem. I also tried CCleaner but it ran overnight without finishing. Next I started manually removing files in Temporary Internet Files folder from a command prompt. Then MWB ran to completion without finding anything but 15 risks showed up in Vipre AV (which was installed after lapse of coverage). I realize I can't be sure the system is clean but I think I may have gotten it. I intend to run Eset online scanner as well as running rkill and Rogue Killer again just to see if they come back clean. Do either of you want to see any log files? HJT etc.?
0
 
LVL 93

Expert Comment

by:John Hurst
ID: 38748776
You can never be sure with rootkits because they come back again. If you think the system is working, run it for a while to see if it is stable.
.... Thinkpads_User
0
 
LVL 38

Expert Comment

by:Gerwin Jansen, EE MVE
ID: 38748855
Might be an idea to run a virus scanner from a bootable cd. Avg has one,  as do Comodo, bitdefender and Avira.
0
 
LVL 7

Author Closing Comment

by:rettif9
ID: 38749823
I neglected to mention earlier that I was also reluctant to do a fresh install because the computer has a recovery partition but no Disks. Not insurmountable but it can be difficult to find drivers sometimes.
The Eset online scan found and fixed one more problem, rkill and Rogue Killer both found no issues. Vipre full scan also found nothing. I'll run a CD based scan as suggested above but I think I may have it cleaned up. Thanks for the suggestions.
0
 
LVL 93

Expert Comment

by:John Hurst
ID: 38750448
@rettif9 - Thanks for the update. I was happy to help you with this.

.... Thinkpads_User
0

Featured Post

Free Tool: Path Explorer

An intuitive utility to help find the CSS path to UI elements on a webpage. These paths are used frequently in a variety of front-end development and QA automation tasks.

One of a set of tools we're offering as a way of saying thank you for being a part of the community.

Question has a verified solution.

If you are experiencing a similar issue, please ask a related question

Suggested Solutions

Title # Comments Views Activity
ISA & antivirus 10 79
Recommendation of Antivirus software for Personal Use 19 203
Kaspersky Anti-Ransomware Tool for Business 10 150
Multiple Antivirus Providers  - Corporate 2 108
UPDATE - 6/15/2011 Added support for Release Update 6 Maintenance Patch 2 Point Patch 1 (RU6 MP2 PP1). Fixed a defect in the username field that was hard-coded to look for a specific domain (left over code from testing). This release will be the …
There are many reasons malware will stay around and continue to grow as a business.  The biggest reason is the expanding customer base.  More than 40% of people who are infected with ransomware, pay the ransom.  That makes ransomware a multi-million…
Established in 1997, Technology Architects has become one of the most reputable technology solutions companies in the country. TA have been providing businesses with cost effective state-of-the-art solutions and unparalleled service that is designed…
Email security requires an ever evolving service that stays up to date with counter-evolving threats. The Email Laundry perform Research and Development to ensure their email security service evolves faster than cyber criminals. We apply our Threat…

809 members asked questions and received personalized solutions in the past 7 days.

Join the community of 500,000 technology professionals and ask your questions.

Join & Ask a Question