From the doc: 'Smoke is a file that uses stealth to download and execute the downloaded file. It can support any file type and has been tested on Win98, Win98SE, Win2k and Win ME. It also downloads file quickly since the program is done in the lowest level of programming language, ASM.... Fast executable A 5.5kb server Auto Run Option while file isn't completely downloaded yet Fastest download algorithm available Un-installs server automatically after download A feature to show an error message when the server is executed Melt dropper after installation Download files in different extension and run it as .zip/.scr/.pif.'
TrojanDownloader.Win32.Smokedown.a