Win32:Tiny-AFE detected

Viruses and worms
1

Hi!
I have an avast! 4.8 Home Edition installed in my laptop (a Sony Vaio with Windows Vista). Yesterday (May 2, 2010) I ran a complete scan, and it detected 7 Win32:Tiny-AFE trojans, all installed on or after April 28, 2010, which I removed to the “quarentene” folder as recommended by the program. I subsequently ran the avast! scan again, and also Windows Live One Care Full Service Scan, and no malware was detected.
Now I have the following questions, which are worrying me quite a lot…:

  1. Why didn’t avast!'s permanent protection identify the trojans before they were dowloaded (as has happened in the past)?
  2. Are the scans I made enough to ensure that everything is ok now?
  3. Is it enough to let them in the quarentene, or should I delete them from there too?
  4. Do you know what this trojan does?
  5. Is it possible to know whether it was “active” during the time it remained undetected? I shopped online within this period, and I am very worried that my credit card info may have been copied – as well as any passwords and logins I may have used in these 5 days…!!!
    I would be really very grateful if you could answer my questions as soon as possible, for I work with my laptop and am now totally insecure!
    Many thanks,
    Graci
2
  1. looks as the detection was made yesterday http://www.avast.com/virus-update-history

2.5.2010 - 100502-0
Win32:Pushbot-C [Wrm], Win32:Small-NLJ [Trj], Win32:Tiny-AFS [Trj], Win32:Tiny-AFT [Rtk], Win32:Trasec [Rtk]
EDIT: obs that was AFS and AFT so AFE version is probably a bit older…

  1. nothing is 100%

  2. let the bug stay in quarantine for 30 days before you delete, to see if the computer is working okay
    http://antivirus.about.com/b/2007/03/11/clean-quarantine-or-delete.htm

  3. http://www.pctools.com/no/mrc/infections/id/Backdoor.Tiny.C
    http://www.microsoft.com/security/portal/Threat/Encyclopedia/Entry.aspx?Name=Trojan%3AWin32%2FConhook.D

  4. dont no

3

Check your computer for Malware with

Malwarebytes Antimalware http://filehippo.com/download_malwarebytes_anti_malware/
after install click UPDATE and run quick scan, click on REMOVE SELECTED to quarantine anything found

SUPERAntiSpyware http://filehippo.com/download_superantispyware/
Are cookies really spyware and are they dangerous?
http://www.superantispyware.com/supportfaqdisplay.html?faq=26

If anything is found come back and post the scan logs here