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Published Feb 06, 2007 | Updated Sep 15, 2017

TrojanDownloader:Win32/Perka.A

Detected by Microsoft Defender Antivirus

Aliases: Trojan-Downloader.Win32.Nurech.aa (Kaspersky) Downloader-AAP (McAfee) W32/Malware.JFL (Norman) Troj/Dloadr-ASR (Sophos) Trojan-Downloader.Win32.Nurech.aa (Sunbelt Software) Trojan.Magvap (Symantec) TROJ_DLOADER.KHZ (Trend Micro)

Summary

TrojanDownloader:Win32/Perka.A downloads a file named win.exe from a specified remote website and runs the file. Before opening the Internet connection to download the file, TrojanDownloader:Win32/Perka.A searches for and tries to kill processes related to Kaspersky, McAfee, and Eset active protection. Copies of TrojanDownloader:Win32/Perka.A have been known to be seeded in e-mail messages, but could also be encountered through Internet downloads.
Manual removal is not recommended for this threat. To detect and remove this threat and other malicious software that may have been installed, run a full-system scan with an up-to-date antivirus product such as Microsoft Security Essentials, or the Microsoft Safety Scanner. For more information about using antivirus software, see http://www.microsoft.com/security/antivirus/av.aspx.
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