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Published Feb 02, 2015 | Updated Sep 15, 2017


Detected by Microsoft Defender Antivirus

Aliases: Trojan horse SpamTool.KLC (AVG) TR/Crypt.ZPACK.Gen (Avira) W32/SpamTool_Agent.NFU!tr (Fortinet)


Windows Defender detects and removes this threat.

This threat can use your PC to send spam emails from compromised email accounts. The spam emails are used to spread other malware, such as Win32/Upatre.

It can be installed by other malware or when you visit a malicious or compromised website.

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find hidden malware.

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

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