Trojan-Downloader:JS/Agent.CKL

Classification

Malware

Trojan-Downloader

JS

Trojan-Downloader:JS/Agent.CKL, Trojan-Downloader.JS.Agent.ckl

Summary

This type of trojan secretly downloads malicious files from a remote server, then installs and executes the files.

Removal

Automatic action

Based on the settings of your F-Secure security product, it will either move the file to the quarantine where it cannot spread or cause harm, or remove it.

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Knowledge Base

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User Guide

See the user guide for your product on the Help Center.

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Submit a sample

Submit a file or URL for further analysis.

Technical Details

Upon execution, this trojan will try to take advantage of the following vulnerabilities:

  • Microsoft Office Snapshot Viewer ActiveX vulnerability
  • Sina DLoader Class ActiveX Control 'DonwloadAndInstall' Method Arbitrary File Download Vulnerability
  • Internet Explorer (MDAC) Remote Code Execution Exploit (MS06-014)
  • UUSee UUUpgrade ActiveX Control 'Update' Method Arbitrary File Download Vulnerability
  • Ourgame 'GLIEDown2.dll' ServerList Method ActiveX Control Remote Code Execution Vulnerability
  • RealPlayer IERPCtl.IERPCtl.1 (CVE-2007-5601)
  • Baidu Soba Remote Code Execute Vulnerability
  • DPClient.Vod (CVE-2007-6144)

If any of these vulnerabilities are present on the user's system, the malware will exploit it in order to download and execute files from the following sites:

  • http://down.hs7yue.cn/[...]/a2.css - Trojan.Win32.Agent.wnu
  • http://down.hs7yue.cn/[...]/sina.exe - Trojan.Win32.Agent.wnu
  • http://down.hs7yue.cn/[...]/Baidu.cab - Trojan-Downloader.Win32.Agent.wps
  • http://jzm015.cn/[...]115.swf - Exploit.SWF.Downloader.eh
  • http://jzm015.cn/[...]115.swf - Exploit.SWF.Downloader.eh
  • http://down.hs7yue.cn/[...]/UU.ini - unavailable

The online F-Secure Health Check can help determine whether a user's system has vulnerabilities which can be exploited, and assist in finding fixes for any vulnerabilities discovered.

Date Created: -

Date Last Modified: -