Dumaru.E is a minor variant of Dumaru.A. They only differ in the IRC server parameters the backdoor component uses.
Once detected, the F-Secure security product will automatically disinfect the suspect file by either deleting it or renaming it.
Detailed description of Dumaru.A is available at:
F-Secure Anti-Virus detects this worm variant with:
Detection Type: PC
Technical Details: Gergely Erdelyi, 9th of September, 2003