Black Basta

Malware
37 incidents First seen 2025-09-19 Last seen 2026-10-28
Overview

Black Basta is ransomware written in C++ that has been offered within the ransomware-as-a-service (RaaS) model since at least April 2022; there are variants that target Windows and VMWare ESXi servers. Black Basta operations have included the double extortion technique where in addition to demanding ransom for decrypting the files of targeted organizations the cyber actors also threaten to post sensitive information to a leak site if the ransom is not paid. Black Basta affiliates have targeted multiple high-value organizations, with the largest number of victims based in the U.S. Based on similarities in TTPs, leak sites, payment sites, and negotiation tactics, security researchers assess the Black Basta RaaS operators could include current or former members of the Conti group.

Threat ecosystem
Actors Malware Campaigns CVEs
Tap a node for a quick look · double-tap to open its profile
At a glance
peak priority 160 31 techniques 1 groups use it WindowsESXi in ATT&CK since 2023-03-08 updated 2025-10-21 · v1.2
Activity by month (incidents)
2025-092026-10
Sectors targeted
finance · 7manufacturing · 5education · 3government · 3health · 3legal · 3technology · 3cryptocurrency · 2hospitality · 1media · 1
Countries targeted
US · 15CA · 14CH · 9DE · 9AT · 7UA · 7CR · 6GB · 6IN · 5PR · 5AU · 4FR · 4
Origin
RU · 13US · 9CA · 8AT · 4CH · 4DE · 4
Kinds of incident
Ransomware & Extortion · 17Malware & Botnets · 8Phishing & Social Engineering · 7Law Enforcement · 6Data Breach · 5Industry & Policy · 4
Techniques seen in incidents
Ransomware · 33Social Engineering · 14Extortion · 11Phishing · 10Lateral Movement · 9T1059.001 - PowerShell · 9Impersonation · 8Reconnaissance · 7Exfiltration · 6T1059.007 - JavaScript · 4T1588.001 - Malware · 4Data Leak · 3Impersonate · 3Privilege Escalation · 3
Related actors
BlackByte · 2MuddyWater · 2Contagious Interview · 1NoName057(16) · 1Transparent Tribe · 1
Related CVEs
CVE-2024-55591 · 3CVE-2025-10035 · 2CVE-2025-32433 · 2CVE-2025-33073 · 2CVE-2023-0669 · 1CVE-2023-21529 · 1CVE-2023-27350 · 1CVE-2023-27351 · 1CVE-2023-46805 · 1CVE-2024-0204 · 1
ATT&CK techniques by tactic (31)
execution T1047 Windows Management Instrumentation T1059.001 PowerShell T1059.003 Windows Command Shell T1106 Native API T1204.002 Malicious File
persistence T1112 Modify Registry T1543.003 Windows Service
privilege escalation T1543.003 Windows Service
discovery T1007 System Service Discovery T1018 Remote System Discovery T1082 System Information Discovery T1083 File and Directory Discovery T1497 Virtualization/Sandbox Evasion T1497.001 System Checks T1622 Debugger Evasion T1680 Local Storage Discovery
impact T1486 Data Encrypted for Impact T1490 Inhibit System Recovery T1491.001 Internal Defacement T1529 System Shutdown/Reboot
defense impairment T1112 Modify Registry T1222.002 Linux and Mac Permissions T1553.002 Code Signing T1688 Safe Mode Boot
stealth T1027.001 Binary Padding T1036.004 Masquerade Task or Service T1036.005 Match Legitimate Resource Name or Location T1480.002 Mutual Exclusion T1497 Virtualization/Sandbox Evasion T1497.001 System Checks T1622 Debugger Evasion
Groups that use it
Storm-1811
Incident timeline
2026-10-28
Microsoft Teams has been targeted by IT administrators impersonating attackers, with over 400 incidents confirmed.
2026-10-27
External Teams Chats Anchor 15-Minute Malware Delivery
2026-10-13
MS Teams Phishing, ClickFix and Shai-Hulud npm Attacks Dominate Threat Report
2026-10-09
Silent Ransom Group claims “Luna Moth Files” are fake. The data suggest otherwise.
2026-09-11
Conti ransomware gang member sentenced to 4 years in prison
2026-09-10
Conti ransomware crew member sentenced to four years in prison
2026-08-21
Troutman Pepper Locke Silent as Threat Actors Leak Client Data, Tens of Thousands of SSNs
2026-07-30
Microsoft Teams vishing attacks lead to Chaos ransomware attacks
2026-07-28
Chaos in Teams vishing
2026-07-04
U.S. Government Entity Paid Kairos $1 Million in Data-Theft Extortion Case
2026-06-30
How ransomware syndicates weaponize corporate-style organization
2026-06-26
Woodgnat Hackers Use Mistic RAT to Broker Access for Ransomware Gangs
2026-06-25
Inside Mistic, the New Stealth Backdoor in Ransomware Intrusions
2026-06-24
Stealthy Mistic backdoor linked to ransomware access broker KongTuke
2026-06-15
Infostealers, AI, and 90% Affiliate Cut Fuel Gentlemen's Rise
2026-06-12
Ukrainian national pleads guilty to role in Conti ransomware operation
2026-06-12
Conti ransomware group member pleads guilty, faces up to 20 years in prison
2026-06-12
Conti ransomware group member pleads guilty, faces up to 20 years in prison
2026-05-05
Latvian national sentenced for ransomware attacks run by former Conti leaders
2026-04-23
UNC6692 Impersonates IT Helpdesk via Microsoft Teams to Deploy SNOW Malware
2026-04-17
Are Former Black Basta Affiliates Automating Executive Targeting?
2026-04-14
Black Basta’s playbook lives on as former affiliates launch fast-scale intrusion campaign
2026-04-06
German police unmask two suspects linked to REvil ransomware gang
2026-03-03
Fake Tech Support Spam Deploys Customized Havoc C2 Across Organizations
2026-02-06
Legal threat: DMCA notice to SuspectFile is refuted, but it never should have happened
2026-02-05
ThreatsDay Bulletin: Codespaces RCE, AsyncRAT C2, BYOVD Abuse, AI Cloud Intrusions & 15+ Stories
2026-02-04
New Technical Markers Reveal Expanding ShadowSyndicate Cybercriminal Infrastructure
2026-01-19
Suspects Linked to Black Basta Ransomware Group Raided in Ukraine
2026-01-16
German cops add Black Basta boss to EU most-wanted list
2025-09-19
Ding ding: Fortra rings the perfect-10 bell over latest GoAnywhere MFT bug