Threats Tagged 'pterolnk'

ESET researchers uncovered collaboration between two notorious APT groups, Gamaredon and Turla, both associated with Russia's FSB. The groups were observed working together to compromise high-profile targets in Ukraine. Evidence shows Gamaredon tools being used to restart and deploy Turla's Kazuar backdoor on specific machines. This cooperation indicates a strategic alignment between different FSB units, with Gamaredon likely providing initial access for Turla's more sophisticated operations. The collaboration was detected through multiple attack chains involving various malware tools from both groups. This discovery highlights the evolving tactics of Russian cyber espionage efforts, particularly in the context of the ongoing conflict in Ukraine.

MediumMalwareUkrainePolandGermany+5#fsb#pterographin#ukraine

Throughout 2024, Gamaredon focused exclusively on targeting Ukrainian governmental institutions with spearphishing campaigns and weaponized USB drives. The group developed six new tools and significantly updated existing ones, improving stealth and evasion capabilities. Gamaredon increased the scale of its spearphishing campaigns, especially in the second half of the year. The group also made efforts to bypass network-based blocking, hiding most of its command and control infrastructure behind Cloudflare tunnels. Notable updates include enhancements to PteroLNK for weaponizing network drives, improvements in file exfiltration techniques, and the introduction of new downloaders. Despite these advancements, Gamaredon showed signs of operational limitations, occasionally abandoning or infrequently updating certain tools.

MediumMalwareUkrainePolandGermany+5#powershell#cloudflare tunnels#spearphishing