Troj/LegMir-ARS is a Trojan for the Windows platform.

When first run Troj/LegMir-ARS copies itself to (System)\tavo.exe and creates the following files:

(Temp)\28e9ppia.dll
(Temp)\5.sys
(System)\tavo0.dll

The following registry entry is created to run tavo.exe on startup:

HKCU\Software\Microsoft\Windows\CurrentVersion\Run tava
(System)\tavo.exe

More information can be found at this Sophos page.