Cybersecurity

It is indeed a Czech phrase but definitely exists in other Slavic languages (for example Russian is старый добрый, usually transliterated as "staryy dobryy" or "staryj dobryj"). No group seems to have claimed responsibility; the article says

There are no clear links between this campaign and any previously known crimeware actors, making attribution difficult. However, the use of Russian language in the PDB suggests the campaign may have been developed by a Russian-speaking actor.

The name for the malware seems to have been chosen by Kaspersky and possibly taken from one of the strings in whatever "PDB" is. I'm guessing it's geographically close to Russia but not inside, as Russian threat actors (including script kiddies) tend to take care to exclude Russian citizens.

You're lucky I'm just logged in, my main account is @[email protected]