While analyzing attacks on Russian organizations, Kaspersky team regularly encounters overlapping tactics, techniques, and procedures (TTPs) among different cybercrime groups, and sometimes even shared tools.
Kaspersky researchers recently discovered one such overlap: similar tools and tactics between two hacktivist groups – BlackJack and Twelve, which likely belong to a single cluster of activity. In this report, the researchers will provide information about the current procedures, legitimate tools, and malware used by the BlackJack group, and demonstrate their similarity to artifacts found in Twelve’s attacks. Kaspersky will also analyze another recently discovered activity that has much in common with the activity of the potential cluster.
Read more…
Source: Kaspersky
Related:
- Attackers exploited critical FortiClient EMS bug as a 0-day
April 6, 2026
Fortinet released an emergency patch over the weekend for a critical FortiClient Enterprise Management Server (EMS) bug believed to be under attack since at least March 31. The flaw, tracked as CVE-2026-35616, is an improper access control vulnerability that allows unauthenticated attackers to execute unauthorized code or commands via crafted requests. It earned a critical 9.1 ...
- Watch how job interviewer exposes North Korean fake IT worker
April 6, 2026
For the last few years, North Koreans have gotten remote jobs at hundreds of Western companies pretending to be from somewhere else, using fake resumes, and sometimes with the help of American collaborators. It’s been a major problem for years, as North Korea remains highly sanctioned by the U.S. and European governments because of the regime’s ...
- New “BrowserGate” report claims LinkedIn secretly scans user browsers for installed extensions and collects device data
April 6, 2026
A new report is alleging LinkedIn uses hidden JavaScript to scan its visitors’ browsers for installed extensions, looks for those that compete with its own sales tools, and then twists its users’ arms until they stop using those and pick LinkedIn’s products, instead. However the social network says this is a smear campaign run by a ...
- Storm-1175 focuses gaze on vulnerable web-facing assets in high-tempo Medusa ransomware operations
April 6, 2026
The financially motivated cybercriminal actor tracked by Microsoft Threat Intelligence as Storm-1175 operates high-velocity ransomware campaigns that weaponize N-days, targeting vulnerable, web-facing systems during the window between vulnerability disclosure and widespread patch adoption. Following successful exploitation, Storm-1175 rapidly moves from initial access to data exfiltration and deployment of Medusa ransomware, often within a few days and, ...
- Weaponizing Trust Signals: Claude Code Lures and GitHub Release Payloads
April 3, 2026
In late March 2026open on a new tab, Anthropic inadvertently released the internal Claude Code source material as part of an npm package that included a large internal source map file. Although the incident stemmed from a simple packaging mistake, threat actors were quick to capitalize on the resulting attention. Only 24 hours after the ...
- vSphere and BRICKSTORM Malware: A Defender’s Guide
April 2, 2026
Building on recent BRICKSTORM research from Google Threat Intelligence Group (GTIG), this post explores the evolving threats facing virtualized environments. These operations directly target the VMware vSphere ecosystem, specifically the vCenter Server Appliance (VCSA) and ESXi hypervisors. To help organizations stay ahead of these risks, we will focus on the essential hardening strategies and mitigating controls ...