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Microsoft Security Intelligence
Published May 28, 2008 | Updated Sep 15, 2017

Spammer:Win32/Cutwail.gen!C

Detected by Microsoft Defender Antivirus

Aliases: Email-Worm.Win32.Agent.bx (Kaspersky) Spy-Agent.bv (McAfee) W32/Smallworm.BDM (Norman) Mal/Basine-C (Sophos)

Summary

Win32/Cutwail is a multi-component family of trojans that download and execute arbitrary files. Downloaded files may be executed from disk or injected directly into other processes. Whilst the functionality of the files that are downloaded is variable, Cutwail's purpose is often to send spam. Cutwail also employs a rootkit and other defensive techniques to avoid detection and removal.
 
This component is used to send spam.
Manual removal is not recommended for this threat. Use Microsoft Security Essentials or another up-to-date scanning and removal tool to detect and remove this threat and other unwanted software from your computer. For more information on Microsoft security products, see http://www.microsoft.com/protect/products/computer/default.mspx.
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