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Need help - various infections [Moved]


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#1 cma371

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Posted 29 June 2009 - 10:03 PM

Had various issues. found reader_s infection, then SKYNET. Tried to use combofix, but got error that it was infected with virut and advised to get new copy of combofix. Then ran symantec W32.Virut Removal Tool and was able to run combofix. Still have problems.

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#2 Orange Blossom

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Posted 29 June 2009 - 10:55 PM

As no logs have been posted, I am shifting this topic from the specialized HiJack This forum to the Am I Infected forum.

==>PLEASE DO NOT NOW POST LOGS<== unless a log is specifically requested.

found reader_s infection


Please provide the full file path for the aforementioned reader_s

This is an example of a file path: C:\DOCUMENTS AND SETTINGS\MICKEY MOUSE\LOCAL SETTINGS\TEMP\ETILQ in which ETILQ is the file in question.

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#3 cma371

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Posted 29 June 2009 - 11:15 PM

I believe reader_s has been removed, but have SKYNET entries in my reg file. Had tried to run combofix, but got error that it was not safe and was infected with w32.virut. Ran symantec removal of W32 and now believe I can run combofix

#4 Orange Blossom

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Posted 29 June 2009 - 11:26 PM

Please DO NOT run Combofix. ComboFix is an extremely powerful tool which should only be used when instructed to do so by someone who has been properly trained. ComboFix is intended by its creator to be "used under the guidance and supervision of an expert." It is NOT for private use. Please read Combofix's Disclaimer. Using this tool incorrectly could lead to disastrous problems with your operating system such as preventing it from ever starting again.

Running ComboFix by yourself is like performing open heart surgery on yourself--the scalpel and other surgical tools that is ComboFix is meant to be wielded by a highly trained surgeon only in emergencies or dire circumstances. When the surgeon is thru s/he leaves the room. So combofix should be removed from a system once it has accomplished its job, unlike an AV that is there to protect you from future infections.

. . . CF does make some alterations to your system if you run it. Even if you had no malware removed and run the uninstall command, some things may be different now on your system. I can tell you that one thing is that all your restore points will be flushed out and a new one created. There is a good reason to do that when you have a severe infection--but if you aren't infected you might need those restore points.

Read and abide by the disclaimer people. It's there for a reason. Stick to running and protecting yourself with a good AV and firewall and an anti-malware scanner or two. If you feel you need a second opinion, try running online scans. If you feel you might need surgery, come here to BC and ask for help--that is what we're here for.


From: http://www.bleepingcomputer.com/forums/ind...t&p=1159014

I believe reader_s has been removed


Whether that file has been removed or not, I still need to know what the file path for it was. There should be a log from the security program that deleted it that should tell you. That information is VERY important.

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#5 cma371

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Posted 29 June 2009 - 11:32 PM

sorry, i've tried so many different programs I don't know which removed it, but it was in a temp directory under a local settings directory for one of the users of the computer.

#6 Orange Blossom

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Posted 30 June 2009 - 06:04 PM

Hello cma371,

I've consulted with some other folks here. I know your initial post mentioned Virut, but I am also aware that there are false positives of that infection. That means that a security program will say that a file is a bad one when in reality it isn't. That is why I wanted to know the file path for reader_s.

The folks I have consulted with have confirmed from the information you already reported that you do indeed have the Virut infection. I'm afraid that this is bad news.

Your system is infected with a nasty variant of Virut, a polymorphic file infector with IRCBot functionality which infects .exe, .scr files, downloads more malicious files to your system, and opens a back door that compromises your computer. According to this Norman White Paper Assessment of W32/Virut, some variants can infect the HOSTS file and block access to security related web sites. Virux is an even more complex file infector which can embed an iframe into the body of web-related files and infect script files (.php, .asp, and .html). When Virut creates infected files, it also creates non-functional files that are corrupted beyond repair. In many cases the infected files cannot be disinfected properly by your anti-virus. When disinfection is attempted, the files become corrupted and the system may become irreparable.

The virus has a number of bugs in its code, and as a result it may misinfect a proportion of executable files....some W32/Virut.h infections are corrupted beyond repair.

McAfee Risk Assessment and Overview of W32/Virut

There are bugs in the viral code. When the virus produces infected files, it also creates non-functional files that also contain the virus...Due to the damaged caused to files by virut it's possible to find repaired but corrupted files. They became corrupted by the incorrect writing of the viral code during the process of infection. undetected, corrupted files (possibly still containing part of the viral code) can also be found. this is caused by incorrectly written and non-function viral code present in these files.

AVG Overview of W32/VirutThis kind of infection is contracted and spread by visiting remote, crack and keygen sites. These type of sites are infested with a smörgåsbord of malware and an increasing source of system infection. However, the CA Security Advisor Research Blog says they have found MySpace user pages carrying the malicious Virut URL. Either way you can end up with a computer system so badly damaged that recovery is not possible and it cannot be repaired. When that happens there is nothing you can do besides reformatting and reinstalling the OS.

...warez and crack web pages are being used by cybercriminals as download sites for malware related to VIRUT and VIRUX. Searches for serial numbers, cracks, and even antivirus products like Trend Micro yield malcodes that come in the form of executables or self-extracting files...quick links in these sites also lead to malicious files. Ads and banners are also infection vectors...

Keygen and Crack Sites Distribute VIRUX and FakeAV

If your computer was used for online banking, has credit card information or other sensitive data on it, you should disconnect from the Internet until your system is cleaned. All passwords should be changed immediately to include those used for banking, email, eBay, paypal and online forums. You should consider them to be compromised. You should change each password using a clean computer and not the infected one. If not, an attacker may get the new passwords and transaction information. If using a router, you need to reset it with a strong logon/password so the malware cannot gain control before connect again. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read:There is no guarantee this infection can be completely removed. In some instances it may have caused so much damage to your system that it cannot be completely cleaned or repaired. The malware may leave so many remnants behind that security tools cannot find them. Many experts in the security community believe that once infected with this type of malware, the best course of action is to wipe the drive clean, reformat and reinstall the OS. Reinstalling Windows without first wiping the entire hard drive with a repartition and/or format will not remove the infection. The reinstall will only overwrite the Windows files. Any malware on the system will still be there afterwards. Please read:To translate a bit, the reformatting is necessary not only because it is unlikely to find and fully remove the infection but because the workhouse of the computer and all the programs has been damaged and is not fixable even if all the damaged parts can be found which is unlikely. Frankly, I would not trust ANY file that has been on this computer. A full format and clean install is the only reliable and safe option when infected by Virut.

Orange Blossom :thumbsup:

Edited by Orange Blossom, 30 June 2009 - 06:08 PM.
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