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APT41 Cyber-Espionage Tactics Explored in Ransomware Emulations

First seen 6 Jan 2026, 23:41 UTC • •59.3

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ThreatCluster •March 12, 2026 at 13:27 UTC

The article discusses the fifth volume of AttackIQ’s Ransom Tales series, which simulates the tactics of ransomware families REvil, DarkSide, and BlackMatter. These emulations are designed to help organizations validate their detection and response workflows against the methodologies used by the APT41 group in cyber-espionage campaigns.

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Updated 228d ago How this analysis works

Threat Graph

12 entities, 32 inferred relationships (STIX 2.1).

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Threat Actor (4)

APT41
BlackMatter
DarkSide
REvil

Technique (4)

Data Breach
Malware
Phishing
Ransomware

Vulnerability (4)

CVE-2017-17562
CVE-2017-9805
CVE-2021-44228
CVE-2022-26134

Relationships

APT41 uses Data Breach
APT41 uses Malware
APT41 uses Phishing
APT41 uses Ransomware
BlackMatter uses Data Breach
BlackMatter uses Malware
BlackMatter uses Phishing
BlackMatter uses Ransomware
DarkSide uses Data Breach
DarkSide uses Malware
DarkSide uses Phishing
DarkSide uses Ransomware
REvil uses Data Breach
REvil uses Malware
REvil uses Phishing
REvil uses Ransomware
APT41 exploits CVE-2017-17562
APT41 exploits CVE-2017-9805
APT41 exploits CVE-2021-44228
APT41 exploits CVE-2022-26134
BlackMatter exploits CVE-2017-17562
BlackMatter exploits CVE-2017-9805
BlackMatter exploits CVE-2021-44228
BlackMatter exploits CVE-2022-26134
DarkSide exploits CVE-2017-17562
DarkSide exploits CVE-2017-9805
DarkSide exploits CVE-2021-44228
DarkSide exploits CVE-2022-26134
REvil exploits CVE-2017-17562
REvil exploits CVE-2017-9805
REvil exploits CVE-2021-44228
REvil exploits CVE-2022-26134

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APT41 Cyber-Espionage Tactics Explored in Ransomware Emulations

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Extracted Entities (12)

APT Groups (1)

Attack Types (4)

CVEs (4)

Ransomware Groups (3)