Microsoft security software detects and removes this threat.
This threat can inject malicious code into your Windows applications, including code that downloads other malware. 

What to do now

Use the following free Microsoft software to detect and remove this threat:

You should also run a full scan. A full scan might find other hidden malware.

Get more help

You can also visit our advanced troubleshooting page or search the Microsoft virus and malware community for more help.

If you’re using Windows XP, see our Windows XP end of support page.

Threat behavior

VirTool:Win32/CeeInject.gen!J is Microsoft's generic detection for a group of applications often used by malware authors to inject code into other running Windows applications.
VirTool:Win32/CeeInject.gen!J usually detect files that carry different kinds of payloads that do a number of things without the user's knowledge. The payload is then inserted into other currently running applications, such as an innocuous file download injected into Internet Explorer that actually downloads other malware.
Analysis by Jireh Sanico


Alerts from your security software may be the only symptom.


Alert level: Severe
First detected by definition:
Latest detected by definition: 1.199.1328.0 and higher
First detected on: Oct 07, 2008
This entry was first published on: Oct 29, 2008
This entry was updated on: Oct 13, 2014

This threat is also detected as:
  • Troj/Dwnldr-HDY (Sophos)
  • Trojan.Dropper.SCZ (BitDefender)
  • Backdoor.Win32.Poison.dhr (Kaspersky)
  • BACKDOOR.Trojan (Symantec)