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Cyber Threat
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Ransomware victim Business Services

T2 Group

Listed by Blackbyte on · organisation based in Sweden

t2group.co.uk

Disclosed
Jul 16, 2025
Leak-site listing date
Threat group
Blackbyte
16 victims listed
Country
Sweden
#20 most targeted
Sector
Business Services

ThreatAI analysis

Compiled from this incident record and the threat intelligence profile for Blackbyte. Figures and technique mappings are quoted from the source data, not inferred.

About the Blackbyte group

Ransomware. Uses dropper written in JavaScript to deploy a .NET payload. Blackbyte has listed 147 victims since October 2021.

How Blackbyte is documented to operate

Valid Accounts T1078 Stealth Persistence

Adversaries may obtain and abuse credentials of existing accounts as a means of gaining Initial Access, Persistence, Privilege Escalation, or Defense Evasion. Compromised credentials may be used to bypass access controls placed on various resources on systems within the network and may even be used for persistent access to remote systems and externally available services, such as VPNs, Outlook Web Access, network devices, and remote desktop. Compromised credentials may also grant an adversary increased privilege to specific systems or access to restricted areas of the network.

Mitigations: Application Developer Guidance, User Training, Password Policies, User Account Management, Privileged Account Management, Multi-factor Authentication

MITRE ATT&CK reference
Exploit Public-Facing Application T1190 Initial Access

Adversaries may attempt to exploit a weakness in an Internet-facing host or system to initially access a network. The weakness in the system can be a software bug, a temporary glitch, or a misconfiguration. Exploited applications are often websites/web servers, but can also include databases (like SQL), standard services (like SMB or SSH), network device administration and management protocols (like SNMP and Smart Install), and any other system with Internet-accessible open sockets. On ESXi infrastructure, adversaries may exploit exposed OpenSLP services; they may alternatively exploit exposed VMware vCenter servers.

Mitigations: Vulnerability Scanning, Limit Access to Resource Over Network, Filter Network Traffic, Network Segmentation, Privileged Account Management, Application Isolation and Sandboxing

MITRE ATT&CK reference
Windows Management Instrumentation T1047 Execution

Adversaries may abuse Windows Management Instrumentation (WMI) to execute malicious commands and payloads. WMI is designed for programmers and is the infrastructure for management data and operations on Windows systems. WMI is an administration feature that provides a uniform environment to access Windows system components. The WMI service enables both local and remote access, though the latter is facilitated by Remote Services such as Distributed Component Object Model and Windows Remote Management. Remote WMI over DCOM operates using port 135, whereas WMI over WinRM operates over port 5985 when using HTTP and 5986 for HTTPS.

Mitigations: Execution Prevention, Behavior Prevention on Endpoint, User Account Management, Privileged Account Management

MITRE ATT&CK reference

MITRE ATT&CK techniques attributed to Blackbyte across its recorded activity, not a finding about how T2 Group was reached.

Incident analysis

T2 Group was listed by Blackbyte ransomware, a group with 16 victims recorded in this database. The listing appeared on the group's leak site on July 16, 2025.

T2 Group is based in Sweden and operates in the Business Services sector. Sweden ranks #20 worldwide for ransomware disclosures, with 160 victims in this database.

Sector context. Business services firms often have access to multiple client environments, making them high-value pivot points for ransomware operators seeking to maximise impact across multiple victim organisations.

Blackbyte typically follows a double extortion model: data is exfiltrated from the victim's systems before files are encrypted, so the victim faces two demands at once — pay to restore access, and pay to keep stolen data unpublished. The leak site, where this listing appeared, is the lever for the second demand.

Source. Public leak-site disclosures aggregated via the ransomware.live API. The disclosure date is when the listing was published, which can differ from the date of compromise. This site does not publish or link to stolen data. Last updated .

Frequently asked questions

Was T2 Group attacked by ransomware?

Yes. T2 Group was listed as a victim of the Blackbyte ransomware group on July 16, 2025. The organisation is based in Sweden and operates in the Business Services sector. The disclosure appeared on the group's dark web leak site.

Which ransomware group attacked T2 Group?

T2 Group was attacked by Blackbyte ransomware. Blackbyte is one of the most active ransomware groups, having claimed 16 victims globally. The group typically employs a double-extortion model: encrypting the victim's files and threatening to publish stolen data.

When did the T2 Group ransomware attack occur?

The ransomware attack on T2 Group was disclosed on July 16, 2025. This date reflects when the victim was published on the threat group's leak site, which may differ from the actual date of initial compromise.

What data was stolen in the T2 Group ransomware attack?

The specific data stolen from T2 Group has not been independently verified by this platform. Ransomware groups typically exfiltrate data before encrypting systems and use the threat of publication to pressure victims. As a Business Services organisation, T2 Group likely held sensitive business data, client information, and operational records.

How can organisations protect against Blackbyte attacks?

To defend against Blackbyte and similar threat actors, organisations should: maintain regular offline backups tested for restoration; implement network segmentation to limit lateral movement; deploy multi-factor authentication on all remote access; use endpoint detection and response (EDR) tools; conduct regular phishing and security awareness training; and monitor threat intelligence feeds for indicators of compromise (IOCs) associated with active groups.