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Bagle, a new Internet Worm, Makes Its Presence Felt

January 19, 2004

Kaspersky Labs, a leading information security software developer is warning users about I-Worm.Bagle, a new Internet worm detected in the wild. The worm spreads via email with a random sender address. Kaspersky Labs has...


Kaspersky Lab, a leading information security software developer is warning users about I-Worm.Bagle, a new Internet worm detected in the wild. The worm spreads via email with a random sender address. Kaspersky Lab has received reports of infections from around the world; Bagle is causing a significant outbreak. The worm is a Windows EXE file about 15 KB in size attached to emails with random sender addresses. The subject, 'Hi', body, 'Test =)' and signature 'Test, yep' are constant, whereas the name of the attachment is random. Once the worm is launched, it copies itself into the Windows directory and attempts to download and launch Mitglieder, a Trojan proxy server, on the infected machine. This proxy server allows the 'master' to use the infected machine as a platform to send more copies of the malicious code. Currently, all links to Internet sources for downloading Mitglieder are deleted. Thus, I-Worm.Bagle cannot use this technology to increase propagation speed. As a result, at this time, I-Worm.Bagle is using a technique standard for Trojan programs. Bagle scans the file system on infected machines for files with extensions wab, txt, htm and r1. The worm then sends copies of itself to all email addresses that it uncovers, using a built in SMTP server. Kaspersky® Anti-Virus databases have already been updated with protection against Bagle.

Bagle, a new Internet Worm, Makes Its Presence Felt

Kaspersky Labs, a leading information security software developer is warning users about I-Worm.Bagle, a new Internet worm detected in the wild. The worm spreads via email with a random sender address. Kaspersky Labs has...
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Kaspersky is a global cybersecurity and digital privacy company founded in 1997. With over a billion devices protected to date from emerging cyberthreats and targeted attacks, Kaspersky’s deep threat intelligence and security expertise is constantly transforming into innovative solutions and services to protect businesses, critical infrastructure, governments and consumers around the globe. The company’s comprehensive security portfolio includes leading endpoint protection, specialized security products and services, as well as Cyber Immune solutions to fight sophisticated and evolving digital threats. We help over 200,000 corporate clients protect what matters most to them. Learn more at www.kaspersky.com.

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