The file detected as Trojan-PSW.Win32.OnLineGames.JCT drops another trojan that is detected as Trojan-Downloader.Win32.Agent.BLM.

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Technical Details

On execution, files detected as Trojan-PSW.Win32.OnLineGames.jct will modify the access rights for the file named %windir%\system32\drivers\pcihdd.sys. It then deletes pcihdd.sys.It drops a file called that is detected as Trojan-Downloader.Win32.Agent.blm.Note: %windir% typically refers to the C:\Windows folder.The file will drop a new file using the name pcihdd.sys that is detected as Trojan-Downloader.Win32.Agent.blm. It drops the file to the windows system folder and creates the following registry entry to start as a service:

  • HKLM\System\CurrentControlSet\Services\PciHdd ImagePath = \??\C:\WINDOWS\system32\drivers\pcihdd.sys

OnlineGames.JCT may also attempt to load files from the following URLs:

  • http://[REMOVED]
  • http://[REMOVED]

The sites were offline during our investigations.The file pcihdd.sys will attempt to download and parse a file from this URL:


At the time of investigation, the said file contains a link to another malware that is detected as Worm.Win32.Agent.y.