Email-Worm:W32/Sober.W

Classification

Malware

-

-

Sober.W, Email-Worm.Win32.Sober.w, W32/Sober.W@mm, W32/Sober.W.dr

Summary

The Sober.W worm was found on November 15th, 2005. This Sober variant is similar to Sober.T, that appeared yesterday:

https://www.f-secure.com/v-descs/sober_t.shtml

Like the previous variants, this one sends itself inside a ZIP archive as an attachment in email messages with English or German texts. We also received several different droppers for this worm variant. They were apparently created by the worm author manually. They are all detected as 'Sober.w' or 'Sober.W.dr'.

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

Suspect a file is incorrectly detected (a False Positive)?

A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:

  • Check for the latest database updates

    First check if your F-Secure security program is using the latest detection database updates, then try scanning the file again.

  • Submit a sample

    After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.

    NOTE If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.

  • Exclude a file from further scanning

    If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.

    Note You need administrative rights to change the settings.

For more Support

Knowledge Base

Find the latest advice in our Community Knowledge Base.

User Guide

See the user guide for your product on the Help Center.

Contact Support

Chat with or call an expert for help.

Submit a sample

Submit a file or URL for further analysis.

Technical Details

This Sober variant sends a bit different email messages:

Subject:

Ihre eMail!

Body:

Guten Tag,
jemand schickte mir eine Mail mit einer Excel oder Access
Tabelle (kenne mich da nicht so aus!).
Jedenfalls ist diese Mail aber an ihre Mail Adresse adressiert,
aber zu meiner gekommen??? Ist wohl irgendein Fehler.
Ok, hier haben Sie sie wieder zurueck!

Attachment name starts with:

Tabelle

---- OR ----

Subject:

Your email

Body:

Hello,
Sorry, sorry sorry, because,, my English is not the best!
ok, I've got an email with an Excel-Table. But I am not the
recipient, the recipient are you!
I think, it's an mail error!
OK, here is your table back!
cya....

Attachment:

excel_table.zip