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Microsoft Security Intelligence
Published Apr 23, 2009 | Updated Sep 15, 2017

TrojanDownloader:HTML/Renos.gen!A

Detected by Microsoft Defender Antivirus

Aliases: HTML/Zlob (AhnLab) Trojan.HTML.Zlob (BitDefender) Trojan-Downloader.HTML.Agent.lq (Kaspersky) BackDoor-DNM.dldr (McAfee) Troj/DorfHtml-E (Sophos)

Summary

TrojanDownloader:HTML/Renos.gen!A is Microsoft's generic detection for a trojan HTML script that attempts to download executable rogue security software when a user visits a malicious Web site and moves the mouse cursor over certain graphics or images.
 
Note: Reports of Rogue Antivirus programs have been more prevalent as of late.  These are programs that generate misleading alerts and false detections in order to convince users to purchase illegitimate security software.  Some of these programs, such as Trojan:Win32/Antivirusxp and Program:Win32/FakeRednefed may display product names or logos in an apparently unlawful attempt to impersonate Microsoft products. 
 
Use Microsoft Windows Defender, the Microsoft Safety Scanner (http://go.microsoft.com/fwlink/?LinkId=212742), or another up-to-date scanning and removal tool to detect and remove these threats and other unwanted software from your computer. For more information on Microsoft security products, see http://www.microsoft.com/protect/products/computer/default.mspx.
 
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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