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Email-Worm:W32/Runouce

Classification

Category: Malware

Type: Email-Worm

Aliases: Email-Worm:W32/Runouce, Win32.Runouce.B@mm, Win32/Chir, Email-Worm.Win32.Runouce, W32.Chir.B@mm (Symantec)

Summary


Email-Worm:W32/Runouce is distributed in infectious executable email attachments.

Removal


Automatic action

Based on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the detected program or file, or ask you for a desired action.

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Technical Details


Installation

When run it copies itself to the System Directory as Runouce.exe and modifies Windows Registry so that the copy in the direcorty is run each time Windows starts.

Propagation

Searches for HTML files in the users' hard drive and modifies them to launch the file README.EML, created in the same directory where the HTML is found.

To propagate itself, Runouce creates email messages with the following format:

Subject: [text, followed by "is comming!"]
From: [The sender address pretends to be one from yahoo.com]
 

The worm spreads itself as an attachment named pp.exe with MIME type audio/x-wav.

It uses a static server to send messages through its own SMTP engine.


Variant:Runouce.B

Runouce is an internet worm. When run it copies itself to the System Directory as Runouce.exe and modifies windows registry so it is run each time windows starts. Searches for HTML files in the users' hard drive and modifies them to launch the file README.EML, created in the same directory where the HTML is found. Sends email with the following format:

Subject:is comming! From:[The sender address pretends to be one from yahoo.com]

The worm spreads itself as an attachment named pp.exe with MIME type audio/x-wav. It uses a static server to send messages through its own SMTP engine.