We have a severe problem.
C:\WINDOWS\system32\reader_s.exe (Trojan.Agent) ->
This looks like Virut. Until we know for sure, please isolate your computer. No emails, no file transfers. You also have, or have had a info stealer that goes after banking records.
Please submit the following files to Jotti's :
HERE- C:\WINDOWS\notepad.exe
- C:\WINDOWS\regedit.exe
- C:\WINDOWS\system32\rundll32.exe
- C:\WINDOWS\system32\reader_s.exe
Post back the results of those scans.IMPORTANT NOTE: One or more of the identified infections was related to a
rootkit component.
Rootkits and
backdoor Trojan are
very dangerous because they use advanced techniques (backdoors) as a means of accessing a computer system that bypasses security mechanisms and steal sensitive information which they send back to the hacker. Many rootkits can hook into the Windows 32-bit kernel, and patch several APIs to hide new registry keys and files they install. Remote attackers use
backdoor Trojans and rootkits as part of an exploit to gain unauthorized access to a computer and take control of it without your knowledge.
If your computer was used for online banking, has credit card information or other sensitive data on it,
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. They should be changed by using a different computer and not the infected one. If not, an attacker may get the new passwords and transaction information. Banking and credit card institutions should be notified of the possible security breach. Because your computer was compromised please read
How Do I Handle Possible Identify Theft, Internet Fraud and CC Fraud? Although the rootkit was identified and removed, your PC has likely been compromised and there is no way to be sure the computer can ever be trusted again.
It is dangerous and incorrect to assume that because the rootkit has been removed the computer is now secure. In some instances an infection 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. Please read:
• "
When should I re-format? How should I reinstall?"
• "
Help: I Got Hacked. Now What Do I Do?"
• "
Where to draw the line? When to recommend a format and reinstall?"
Part II - VirutYour 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/VirutThere 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 FakeAVIf 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:
After reviewing your Jotti scans, we can determine what is next.
Thaks,
rigel
Welcome to BleepingComputer, a free community where people like yourself come together to discuss and learn how to use their computers. Using the site is easy and fun. As a guest, you can browse and view the various discussions in the forums, but can not create a new topic or reply to an existing one unless you are logged in. Other benefits of registering an account are subscribing to topics and forums, creating a blog, and having no ads shown anywhere on the site.
Back to top
