Trojan-Downloader:JS/Agent.CTL
Summary
This type of trojan secretly downloads malicious files from a remote server, then installs and executes the files.
Removal
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.
A False Positive is when a file is incorrectly detected as harmful, usually because its code or behavior resembles known harmful programs. A False Positive will usually be fixed in a subsequent database update without any action needed on your part. If you wish, you may also:
- Check for the latest database updates
First check if your F-Secure security program is using the latest updates, then try scanning the file again.
- Submit a sample
After checking, if you still believe the file is incorrectly detected, you can submit a sample of it for re-analysis.
Note: If the file was moved to quarantine, you need to collect the file from quarantine before you can submit it.
- Exclude a file from further scanning
If you are certain that the file is safe and want to continue using it, you can exclude it from further scanning by the F-Secure security product.
Note: You need administrative rights to change the settings.
Technical Details
This trojan-downloader affects users browsing either a malicious website or a legitimate website which has been compromised.
The malware uses Shockwave SWFObject (SWF) Java Script to forcibly run the following crafted SWF content on the browser page:
- http://jzm015.cn/[...]115.swf
- http://jzm015.cn/[...]64.swf
- http://jzm015.cn/[...]47.swf
- http://jzm015.cn/[...]45.swf
- http://jzm015.cn/[...]28.swf
- http://jzm015.cn/[...]16.swf
Running any of these content files triggers the download and execution of a malware file detected as Exploit.SWF.Downloader.eh.
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