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This page is part of Threat Matrix, the public browser workspace for the main AdversaryGraph platform. Use it for ATT&CK pivots, actor and technique context, similarity leads, detection coverage review, and analyst-ready investigation paths.

Validation disclaimer: TTP overlap, actor similarity, generated summaries, and coverage findings are investigation leads, not attribution proof or operational validation without analyst review.

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G1035 · 27 ATT&CK techniques · 0 correlated reports

Winter Vivern

Aliases: TA473, UAC-0114, 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.(Citation: DomainTools WinterVivern 2021)(Citation: SentinelOne WinterVivern 2023)(Citation: CERT-UA WinterVivern 2023)(Citation: ESET WinterVivern 2023)(Citation: Proofpoint WinterVivern 2023)

Open interactive actor investigation

ATT&CK techniques

T1020T1033T1036T1036.004T1041T1053.005T1056.003T1059T1059.001T1059.003T1059.007T1071.001T1082T1083T1105T1113T1114.001T1119T1140T1189T1190T1204.001T1566.001T1583.001T1583.003T1584.006T1595.002

Correlated CTI and IR reports

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Attack tools, simulations and detection rules

Follow explicit source relationships into the reference modules. Linked procedures and detectors are not claims of live validation or actor attribution.

T1020 Automated Exfiltration simulation — Exact active technique ID
T1020 detection rules — Exact active technique ID; not actor-specific detector coverage
T1033 System Owner/User Discovery simulation — Exact active technique ID
T1033 detection rules — Exact active technique ID; not actor-specific detector coverage
T1036 Masquerading simulation — Exact active technique ID
T1036 detection rules — Exact active technique ID; not actor-specific detector coverage
T1036.004 Masquerade Task or Service simulation — Exact active technique ID
T1036.004 detection rules — Exact active technique ID; not actor-specific detector coverage
T1041 Exfiltration Over C2 Channel simulation — Exact active technique ID
T1041 detection rules — Exact active technique ID; not actor-specific detector coverage
T1053.005 Scheduled Task simulation — Exact active technique ID
T1053.005 detection rules — Exact active technique ID; not actor-specific detector coverage
T1056.003 Web Portal Capture simulation — Exact active technique ID
T1056.003 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059 Command and Scripting Interpreter simulation — Exact active technique ID
T1059 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059.001 PowerShell simulation — Exact active technique ID
T1059.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059.003 Windows Command Shell simulation — Exact active technique ID
T1059.003 detection rules — Exact active technique ID; not actor-specific detector coverage
T1059.007 JavaScript simulation — Exact active technique ID
T1059.007 detection rules — Exact active technique ID; not actor-specific detector coverage
T1071.001 Web Protocols simulation — Exact active technique ID
T1071.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1082 System Information Discovery simulation — Exact active technique ID
T1082 detection rules — Exact active technique ID; not actor-specific detector coverage
T1083 File and Directory Discovery simulation — Exact active technique ID
T1083 detection rules — Exact active technique ID; not actor-specific detector coverage
T1105 Ingress Tool Transfer simulation — Exact active technique ID
T1105 detection rules — Exact active technique ID; not actor-specific detector coverage
T1113 Screen Capture simulation — Exact active technique ID
T1113 detection rules — Exact active technique ID; not actor-specific detector coverage
T1114.001 Local Email Collection simulation — Exact active technique ID
T1114.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1119 Automated Collection simulation — Exact active technique ID
T1119 detection rules — Exact active technique ID; not actor-specific detector coverage
T1140 Deobfuscate/Decode Files or Information simulation — Exact active technique ID
T1140 detection rules — Exact active technique ID; not actor-specific detector coverage
T1189 Drive-by Compromise simulation — Exact active technique ID
T1189 detection rules — Exact active technique ID; not actor-specific detector coverage
T1190 Exploit Public-Facing Application simulation — Exact active technique ID
T1190 detection rules — Exact active technique ID; not actor-specific detector coverage
T1204.001 Malicious Link simulation — Exact active technique ID
T1204.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1566.001 Spearphishing Attachment simulation — Exact active technique ID
T1566.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1583.001 Domains simulation — Exact active technique ID
T1583.001 detection rules — Exact active technique ID; not actor-specific detector coverage
T1583.003 Virtual Private Server simulation — Exact active technique ID
T1583.003 detection rules — Exact active technique ID; not actor-specific detector coverage
T1584.006 Web Services simulation — Exact active technique ID
T1584.006 detection rules — Exact active technique ID; not actor-specific detector coverage
T1595.002 Vulnerability Scanning simulation — Exact active technique ID
T1595.002 detection rules — Exact active technique ID; not actor-specific detector coverage

Cyber Knowledge routes

These contextual routes explain behaviors associated with this ATT&CK group record. They support learning and investigation planning; they do not add attribution evidence.

Module 4 — Detection engineering and detection as code
Blue Team & Defensive Security · explicit-id Exploitability validation and laboratory exploit engineering
Vulnerability Research & Exploit Development · explicit-id Module 7 — Privilege, lateral movement, and controlled impact
Red Team & Offensive Security · explicit-name Module 7 — Endpoint defense and EDR
Blue Team & Defensive Security · explicit-name Controlled dynamic behavior and differential observation
Malware Analysis & Reverse Engineering · explicit-name Windows endpoint and identity forensics
Digital Forensics & Incident Response (DFIR) · explicit-name Module 5 — Threat hunting
Blue Team & Defensive Security · explicit-name Mobile and Android vulnerability research
Vulnerability Research & Exploit Development · explicit-name Module 4 — Collection Sources
Cyber Threat Intelligence (CTI) · explicit-name Module 1 — Foundations: What CTI Is
Cyber Threat Intelligence (CTI) · explicit-name Module 5 — Analysis Techniques Tradecraft
Cyber Threat Intelligence (CTI) · explicit-name Module 7 — Intelligence Products Sharing
Cyber Threat Intelligence (CTI) · explicit-name