Threat Actors Targeting Estonia.
| Actor | Type | Origin | Motivation | Sophistication | Exploited CVEs | Top malware |
|---|---|---|---|---|---|---|
| Kimsuky8 aliases | Nation-state APT | South Korea | Ideology | Advanced | 23 | – |
| APT2828 aliases | Nation-state APT | Russia | Ideology | Strategic | 48 | – |
| Sandworm5 aliases | Unclassified | Russia | Ideology | Advanced | 36 | – |
| APT389 aliases | Nation-state APT | North Korea | Financial | Advanced | 65 | – |
| AKIRA4 aliases | Ransomware | Unattributed | Financial | Advanced | 54 | – |
| Qilin5 aliases | Ransomware | Russia | Financial | Advanced | 18 | – |
| FSB Centre 1619 aliases | Nation-state APT | Russia | Ideology | Advanced | 14 | – |
| Cobalt Group7 aliases | Cybercrime | Russia | Financial | Moderate | 17 | – |
| UNC47363 aliases | Nation-state APT | North Korea | Financial | Advanced | 14 | – |
| Winter Vivern4 aliases | Nation-state APT | Russia | Espionage | Advanced | 6 | – |
| Turla12 aliases | Unclassified | Unattributed | Ideology | Expert | 2 | – |
| NoName057(16)3 aliases | Unclassified | Russia | Ideology | Moderate | – | – |
| Silent Librarian7 aliases | Nation-state APT | Iran | Espionage | Advanced | 14 | – |
| Candiru1 alias | Cybercrime | Israel | Financial | Expert | 2 | – |
| Cactus1 alias | Ransomware | Unattributed | Financial | Advanced | 3 | – |
| GhostWriter6 aliases | Unclassified | Belarus | Ideology | Advanced | – | – |
| KILLNET0 aliases | Unclassified | Unattributed | Ideology | Intermediate | – | – |
| Russian intelligence agencies2 aliases | Unclassified | Russia | Ideology | Advanced | – | – |
| StormouS-X4 aliases | Ransomware | Unattributed | Financial | Innovator | – | – |
| GOLD MANSARD0 aliases | Cybercrime | Unattributed | Financial | Not rated | – | – |
| Corkow, Metel2 aliases | Cybercrime | Russia | Financial | Not rated | – | – |
| Circles0 aliases | Cybercrime | Israel | Financial | Not rated | – | – |
| Cyber Berkut1 alias | Nation-state APT | Russia | Espionage | Not rated | – | – |
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FAQ
Common Questions.
Each profile includes the actor's origin, type, active date range, target sectors and countries, MITRE ATT&CK TTPs, related CVEs, malware and tools used, recent campaigns, and motivation. Full IOC feeds and YARA rules are available on the Brandefense platform.
Yes. ATLAS Threat Actors DB covers nation-state APT groups such as Lazarus Group, cybercrime syndicates such as Scattered Spider, and ransomware operations. All profiles are maintained by Brandefense analysts.
IOC feeds, YARA rules, and MITRE ATT&CK navigator exports are available through the full Brandefense platform. Request a demo to get access.