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Welcome to the Viruswarning forums. All your original content has been ported to the new forums as well as new content and additional opportunities to interact with the authors of Viruswarn.com. You can always access old content at www.leedrake.com/forum . You may find some formatting was lost in the conversion and the older versions of the posts to be more readable....
But at least it's all here.
Enjoy!
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Viruswarn Forums
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Lee Drake
Posts:238
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| 05/20/2002 1:36 PM |
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| NakedWife or JibJab is a new VBS worm that is spreading rapidly via e-mail. NakedWife (alias JibJab) also deletes important files from your Windows and System folders. Antivirus software vendors are receiving reports from within the United States, but it is too early to assess how quickly NakedWife is spreading. It currently ranks as a 6 on the ZDNet Virus Meter.
Some links to virus references:
Trend Micro: http://www.antivirus.com/vinfo/virusencyclo/default5.asp?VName=TROJ_NAKEDWIFE
NAI Avert Labs: http://vil.nai.com/vil/virusSummary.asp?virus_k=99035
F-Secure: http://www.europe.f-secure.com/v-descs/nakedwif.shtml
Sophos:
Symantec: http://service1.symantec.com/sarc/sarc.nsf/html/W32.HLLW.JibJab@mm.html
How It Works
NakedWife arrives as an e-mail with the following:
Subject: FW: Naked Wife
Body: My wife never look like that :)
Best Regards,
(Sender)
Attached: NakedWife.exe
If the user clicks the attachment, the worm will e-mail itself to all the addresses in the Outlook Address Book. It will also load a Flash window that displays a message saying "JibJab Loading". It then proceeds to delete all the DLL, INI, EXE, BMP and COM files off your machine rendering it useless.
How to Protect Yourself
As always, the best protection against such attacks is to use caution when opening messages of a suspicious nature that arrive from people you know. This goes double for messages that come with attachments. Regretfully, the best policy to have with regard to mail with attachments is to confirm by another means that the message is authentic before you open it. You can most easily do this by sending a new message to the person who sent you the unexpected attachment. If the sender replies that he or she did not send you such a message, discard the message and its attachment at once and ask the sender to investigate. Additionally, most good antivirus programs these days will scan and clean incoming email messages BEFORE they hit your email client. Norton Antivirus for instance has this ability. Be sure it's enabled and your virus signatures are up to date.
If you feel the need for additional protection, see the instructions below for how to enable heuristic scanning.
Caution! Be aware that heuristic scanning may raise some false alarms. You should carefully investigate and confirm any alert raised by your software's heuristic scanner before you hit the panic button. Get expert assistance in this regard if necessary. You will recognize such a message as follows:
Symantec will tell you that the report is from Hound Dog, which is what they call their heuristic scanning module. McAfee will identify the virus as being of "unknown type" or "New VBS." Here are the instructions for several common brands of anti-virus software: Symantec NAV 5.0:
1. Click Options.
2. Click the Scanner tab.
3. Click Heuristics.
4. Make sure that "Enable Bloodhound" is checked.
5. Move the slider all the way to the right, and then click OK.
6. Click the Auto-Protect tab.
7. Click Heuristics.
8. Make sure that "Enable Bloodhound" is checked.
9. Move the slider all the way to the right, and then click OK.
10. Click OK.
Symantec NAV 2000:
1. Click Options.
2. In the Options list, double-click Manual Scans.
3. In the Options list, under Manual Scans, click Bloodhound.
4. Make sure that "Enable Bloodhound" is checked.
5. Move the slider to Highest level of protection.
6. In the Options list, double-click Auto-Protect.
7. In the Options list, under Auto-Protect, click Bloodhound.
8. Make sure that "Enable Bloodhound" is checked.
9. Move the slider to Highest level of protection.
10. Click OK.
McAfee VirusScan 4.5:
1. Right-click the VirusScan Console icon in the lower right corner of your task bar.
2. Highlight Vshield.
3. Click Task, then Properties.
4. Click Configure.
5. Click the button marked "Advanced."
6. Check the box marked "Enable heuristic scanning."
7. Click "Enable macro and program file heuristics scanning" to fully enable the feature.
8. Click the button marked "Apply" to enable the new settings.
9. Click the button marked "Download Scan."
10. Click the button marked "Advanced."
11. Check the box marked "Enable heuristic scanning."
12. Click "Enable macro and program file heuristics scanning" to fully enable the feature.
13. Click the button marked "Apply" to enable the new settings.
14. Click on the "OK" button.
15. The system will prompt. "System Scan will be loaded on startup. Would you like to load it now?" Click Yes to do so.
Further Details
For those who are interested, you can read further about this worm at any of
the following locations:
Trend Micro: http://www.antivirus.com/vinfo/virusencyclo/default5.asp?VName=TROJ_NAKEDWIFE
NAI Avert Labs: http://vil.nai.com/vil/virusSummary.asp?virus_k=99035
F-Secure: http://www.europe.f-secure.com/v-descs/nakedwif.shtml
Sophos:
Symantec: http://service1.symantec.com/sarc/sarc.nsf/html/W32.HLLW.JibJab@mm.html
Summary
Never open attachments you're not expecting. Keep your signatures up to date and turn on heuristics. Be wary of messages with attachments that don't have adequate and plausible explanations, and that you are expecting. NEVER open anything with a .vbs attachment (no matter what's before it).
This concludes this VirusWarn notice.
Lee Drake, Moderator |
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