Hacker groupG1035
Winter Vivern
Also tracked as TA473, UAC-0114
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.
- Known attack methods
- 27
- Origin
- Russia
- First seen
- 2020
- Source
- MITRE ATT&CK
How they break in
Techniques MITRE has documented this group using, mapped onto the ATT&CK matrix. Each one is a behaviour you can look for in your own logs, and a control you can test.
Used by this groupNot documented for this groupIn brackets: sub-techniques this group uses, of those that exist.
Reconnaissance
12 techniques · 1 used
Resource Development
9 techniques · 2 used
Initial Access
11 techniques · 3 used
Execution
20 techniques · 3 used
Persistence
22 techniques
Privilege Escalation
13 techniques
Stealth
30 techniques · 2 used
Defense Impairment
18 techniques
Credential Access
17 techniques
Discovery
34 techniques · 3 used
Lateral Movement
9 techniques
Collection
17 techniques · 4 used
Command and Control
18 techniques · 2 used
Exfiltration
9 techniques · 2 used
Impact
15 techniques