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Perwall.A
Threat Level I
Damage II
Distribution I
Common name: Perwall.A
Technical name: W32/Perwall.A.worm
Threat level: Medium
Type: Worm
Effects: It many copies of itself in several directories of the affected computer. It spreads through removable, shared and mapped drives.
Affected platforms: Windows 2003/XP/2000/NT/ME/98/95
First detected on: May 12, 2008
Detection updated on: May 12, 2008
Statistics No
Proactive protection: Yes, using TruPrevent Technologies
Brief Description
Perwall.A is a worm that makes many copies of itself in different directories of the affected computer and an AUTORUN.INF file so that whenever of any of these directories is accessed, the worm is run.
Additionally, it is also run whenevera file with a REG (Windows Registry file) or MSC (Microsoft Management Console file) extensión is run.
Perwall.A spreads through removable, mapped and shared drives.
Visible Symptoms
Perwall.A is easy to recognize once it has affected the computer, as when it is run, it opens the folder C:\windows\web\wallpaper, where the wallpaper images are located.
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