No, there is much to add, actually. I'd like to know what activity is considered malicious by our software according to DrWeb. DrWeb claims that the software is (or contains) a Downware. Does this mean that our software shouldn't be able to download any files? But that's the exact functionality of our software as it's a download manager. Other download managers do the same, so why does our is considered malicious?
Downware is generally a PUP classification. A basic definition of a PUP (i.e., Potentially Unwanted Program) is software that is neither a virus nor a Trojan but is of such a nature that most users would want to be alerted to its presence, and in most cases, to have it removed from their computer. (Note: Some variants of downware are classified as adware or Trojans by some antivirus companies.) So, other than sharing the same root word (i.e., down), downware doesn't have anything specifically to do with download managers, although of course, a download manager could be a source of infection.
All sorts of different behaviors can cause a program to be flagged as downware. A few examples of such behaviors are as follows: program attempts to connect to a high-risk domain that may pose a security risk, program attempts to download an executable file from the web, program attempts to connect to a medium-risk domain that may pose a minor security risk, program enumerates many system files and directories, process attempts to call itself recursively, program adds or modifies Internet Explorer cookies, no digital signature is present. (Note: The preceding list of detection criteria was taken from McAfee.com. Other antivirus companies may have different or expanded criteria.)