Dark Slayer Mutation Engine
DSME was the first polymorphic generator from Taiwan. It was written by a person calling himself Dark Slayer. DSME was published in the end of 1993.
Depending on the settings of your F-Secure security product, it will either automatically delete, quarantine or rename the suspect file, or ask you for a desired action.
More information on the scanning and removal options available in your F-Secure product can be found in the Help Center.
You may also refer to the Knowledge Base on the F-Secure Community site for more information.
Interestingly, DSME contains documentation both in English and Chinese. The author sends greetings to Dark Avenger and Nowhere Man and thanks for the inspiration he received from earlier polymorphic generators.
DSME is not as advanced as the generators produced before it. Dark Slayer admits this in his notes. The actual size of the generator is little over 2 kilobytes.
At the moment, there are few viruses known to use the DSME. One of them (DSME.Demovirus) can even be in the wild.