"We are aware of malicious software available from a download site aimed at users in China, and we've blocked the identified apps to prevent them from launching. As always, we recommend that users download and install software from trusted sources," said an Apple spokesperson.
WireLurker was installing malicious apps on iOS devices. Once directly connected to a Mac, WireLurker could begin installing malicious apps there as well, giving the malware its name.
As Apple noted, WireLurker emanated from a Chinese third-party app store. Western users appear to have escaped the bug.
The malware was discovered by cybersecurity firm Palo Alto Networks.