AMTSO documents revisited
The other week I blogged about the newly accepted AMTSO documents. In three quick blog posts I’ll go through all the documents individually in some more detail and why they are important.
Reports
Cloud Atlas activity in the second half of 2025 and early 2026: new tools and a new payload
Cloud Atlas attacks the public sector and diplomatic structures of Russia and Belarus, using ReverseSocks, SSH, and Tor for persistence in infected systems and its new tool, PowerCloud.
Kimsuky targets organizations with PebbleDash-based tools
Kaspersky researchers analyze a range of new PebbleDash-based tools used in recent Kimsuky campaigns and reveal their connection to the AppleSeed malware cluster.
OceanLotus suspected of using PyPI to deliver ZiChatBot malware
Kaspersky researchers uncovered malicious wheel packages in PyPI that targeted both Windows and Linux and contained a dropper delivering malware dubbed ZiChatBot. We attribute this activity to OceanLotus APT.
Silver Fox uses the new ABCDoor backdoor to target organizations in Russia and India
The Silver Fox group is targeting companies in Russia and India by impersonating tax authorities to distribute ValleyRAT and the new ABCDoor backdoor.
