This has become really common. Most modern malware sandboxes attempt to greatly accelerate the system clock to account for this, in addition to trying to detect and intercept long sleep (or equivalent) calls.

Like most long cat-and-mouse games, modern malware families all use a combination of many different tricks and anti-sandbox/analysis techniques. The sandboxes play whack-a-mole at the same rate as malware keeps adding more moles.