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Blue Callisto TAG-53 APT

Updated on 2022-12-07: Callisto APT

PwC’s threat intelligence team published a report last week on the spear-phishing operations carried out by Blue Callisto, a Russian cyber-espionage group, throughout 2022. PwC said the campaign focused on obtaining credentials from US and European government officials and organizations linked to national security matters. In addition, since Russia’s invasion of Ukraine, the group has also targeted Ukrainian entities and an international organization that investigates war crimes. Read more: Blue Callisto orbits around US Laboratories in 2022

Updated on 2022-12-06: TAG-53

Recorded Future also has a report on the same Callisto group, which it tracks as TAG-53. Read more: Exposing TAG-53’s Credential Harvesting Infrastructure Used for Russia-Aligned Espionage Operations

Overview: Callisto

So has Sekoia, and its report is very interesting since it includes the names of a large number of targeted organizations. One particular domain spotted by Sekoia suggest the group may be typosquatting on domains mimicking the Russian Taxation Service and Ministry of Interior. Read more: Calisto show interests into entities involved in Ukraine war support

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