| Port No | 80 |
| Service Name | CGI Backdoor |
| RFC Doc | 0 |
| Protocol | TCP |
| Description | This nondestructive PERL script Trojan is downloaded and used by the backdoor program BKDR_CIADOOR.121. It sends vital system information to a specified Web site that is likely controlled by a malicious user. This PERL script can run on Windows, Linux, and Unix systems. |
| Reference Link | CGI |
| Attack | Solution: Scan your system with Trend Micro antivirus and delete all files detected as PERL_CIADOOR.121. To do this, Trend Micro customers must download the latest pattern file and scan their system. Other Internet users can use HouseCall, Trend Micro's free online virus scanner. |
Catch threats immediately
We work side-by-side with you to rapidly detect cyberthreats
and thwart attacks before they cause damage.