i was got infected by this backdoor recently and and this virus is still there on my pc . i have submitted this file yesterday to avast but it is not added to the detection . sorry for my english ?
Your English is fine. Im sure you will get a reply soon from the higher ups. Thanks for sending in the file.
Yeah,they will reply you back and definitions will be added as soon as they release one (depending on how dangerous is virus/worm).
If you were using Windows XP, why don’t you schedule a boot-time scanning?
If not, I suggest you use the avast! Virus Cleaner: http://files.avast.com/files/eng/aswclnr.exe
Wellcome to forums 
Technical, the Cleaner is not a panacea. It is only able to kill very limited set of worms/viruses. Here’s the list: http://www.avast.com/i_idt_171.html
Anything that is not on the list is not recognized.
Hope this explains it a bit.
Vlk
i have sended that infected file but i have not got any reply yet