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In Search of Riches, Hackers Plant 4G-Enabled Raspberry Pi In Bank Network
Hackers from the group UNC2891 attempted a high-tech bank heist by physically planting a 4G-enabled Raspberry Pi inside a bank's ATM network, using advanced malware hidden with a never-before-seen Linux bind mount technique to evade detection. "The trick allowed the malware to operate similarly to a...
Although the plot was uncovered before the hackers could hijack the ATM switching server, the tactic showcased a new level of sophistication in cyber-physical attacks on financial institutions. As Group-IB was initially investigating the bank's network, researchers noticed some unusual behaviors on the monitoring server, including an outbound beaconing signal every 10 minutes and repeated connection attempts to an unknown device. To enhance the deception, the process is executed with command-line arguments resembling legitimate parameters -- for example, lightdm -- session child 11 19 -- in an effort to evade detection and mislead forensic analysts during post-compromise investigations.
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