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Category: Malware

Type: Trojan-Downloader

Aliases: Trojan-Downloader:W32/Agent.BTF


Trojan-Downloader.Win32.Agent.btf downloads and silently installs a well known Rogue antispyware application named ContraVirus 2.0.


Automatic action

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Technical Details

Agent.BTF attempts to download an installation package from the ContraVirus webpage.It silently installs the ContraVirus application onto the infected machine.It adds autorun launchpoints to:

  • [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] "Windows Update Svc"=
  • [HKEY_LOCAL_MACHINE\SOFTWARE\Microsoft\Windows\CurrentVersion\Run] "Windows Updater Servc"

Malware location:

  • %system32%\xpuupdate.exe