There were more than 50 ATMs spotted earlier in the year with the Tyupkin malware, and it's spreading to other countries, security researchers warn.

Cybercriminals are targeting ATMs in Russia and Eastern Europe with the Tyupkin malware, compromising the cash dispensing machines. More than 50 ATMs were running with the malware, but it has spread to the United States, France, India, China, Israel and Malaysia.

The ATMs need to be physically accessed by the criminals, with a bootable CD containing the malware deployed - with those responsible infecting the ATMs on Sunday and Monday nights, ensuring their faces are covered.

"The Tyupkin malware is an example of the attackers taking advantage of weaknesses in the ATM infrastructure," said Vicente Diaz, Kaspersky Lab Global Research and Analysis Team principal researcher. "We strongly advise banks to review the physical security of their ATMs and network infrastructure and consider investing in quality security solutions."