Winter Vivern
Winter Vivern is a group linked to Russian and Belorussian interests active since at least 2020 targeting various European government and NGO entities, along with sporadic targeting of Indian and US victims. The group leverages a combination of document-based phishing activity and server-side exploitation for initial access, leveraging adversary-controlled and -created infrastructure for follow-on command and control.
Attribution signal
?Score = mentions × confidence weight, summed across all attributed sources. Higher source diversity increases the score.≥ 10 High≥ 3 Moderate< 3 Low0.0
None signal strength
Mentions0
Sources0
High conf.0
First observed
2024-07-29
Last active
—
Origin
Russia
Aliases
3
Techniques
27
Campaigns
0
Russia
Attribution signals
No attribution signals extracted yet — signals populate automatically as articles are processed.