I-Worm.Potar
Potar is a worm virus spreading via the Internet as an attachment to infected emails.
The worm itself is a Windows PE EXE file approx. 202KB in length when compressed by UPX, the decompressed size is approx. 500KB; it is written in Delphi.
Infected email messages have the following attributes:
From: mariya@mail.ru Subject: Masha Body:
Privet!!! Izvini chto tak dolgo ne pisala. Poteryala tvoy adres.
No Irina dala mne ego. Vot Fotka, kotoru ti prosil. Gdu otveta. Tvoya Masha
Attachment: PhotoRar.exe
The worm is activated from infected emails only when a user clicks
on the attached file. Once run the worm installs itself to the system and
runs its spreading routine. Installing
While installing the worm copies itself to the Windows directory
under the name "PhotoRar.exe" and registers this file in the system registry
auto-run key:
HKLM\Software\Microsoft\Windows\CurrentVersion\Run Kernell32Dll =
%windir%\PhotoRar.exe
The worm then displays an error message.
The 'Potar' worm also creates the "supafly.dat" file in the Windows directory and writes the following text to this file:
Salam vsem IZ AFRIKI. OSOBENNIY PRIVET GREEN13 v Bishkeke !!!
Spreading
To send out infected messages the worm uses the default SMTP server.
To get victim email addresses the 'Potar' downloads Web pages from seven different forums located at:
http://forum.rol.ru (three forums are downloaded
here)
http://www.studio.by (one forum is downloaded
here)
http://diesel.elcat.kg (three forums are downloaded here)
The 'Potar' worm extracts email addresses from the downloaded pages.
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