Malware samples used in the recent attacks against several Polish banks contained planted evidence that attempted to blame the attacks on Russian-speaking hackers. These false flags, as the (IT and real-world) security community refers to these planted clues, were discovered by Sergei Shevchenko, a Russian-speaking security expert for BAE Systems.
Article Link: http://www.securitynewspaper.com/2017/02/20/malware-used-attack-polish-banks-contained-false-flags-blaming-russian-hackers/