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Dissecting the JWR phishing framework

Cisco Talos recently identified an undocumented phishing framework, internally branded "JWR" by its developer, built to convincingly impersonate checkout and login pages across major payment and shopping platforms. The client engine of the JWR phishing framework is a real-time, operator-driven system that, rather than merely logging form submissions like a static credential-stealing page, keeps an AES-CTR encrypted WebSocket open to the threat actor so they can steer each victim's session live.…

Shopify PayPal Apple Klarna US

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· Cisco Talos · Dissecting the JWR phishing framework

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Shai-Hulud strikes again: CHAINDROP worm hits 400+ npm packages

On August 4, 2026, Elastic Security Labs identified a new Shai-Hulud campaign targeting the maintainer of keyv, a widely used key-value storage library. The attackers trojanized the monorepo and embedded a self-propagating worm called CHAINDROP that uses stolen npm credentials to automatically backdoor every other package the maintainer had publish rights to. The reach of this compromise is significant: keyv alone received over 600 million downloads last month, with related packages compounding…

keyv flat-cache cacheable-request cacheable US

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· Elastic Security · Shai-Hulud strikes again: CHAINDROP worm hits 400+ npm packages

Shai-Hulud strikes again: CHAINDROP worm hits 400+ npm packages

On August 4, 2026, Elastic Security Labs identified a new Shai-Hulud campaign targeting the maintainer of keyv, a widely used key-value storage library. The attackers trojanized the monorepo and embedded a self-propagating worm called CHAINDROP that uses stolen npm credentials to automatically backdoor every other package the maintainer had publish rights to. The reach of this compromise is significant: keyv alone received over 600 million downloads last month, with related packages compounding…

keyv flat-cache cacheable-request cacheable US

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· Elastic Security · Shai-Hulud strikes again: CHAINDROP worm hits 400+ npm packages

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From open lures to cloaked gates: How a macOS ClickFix campaign learned to hide

In this article Activity overviewHow ClickFix works Campaign overviewClickFix moved from open pages to fingerprinting gatesThe fingerprinting gateMitigation and protection guidanceIndicators of compromise (IOC)ReferencesLearn more Microsoft Threat Intelligence observed a macOS ClickFix campaign distributing infostealers, including MacSync and Atomic Stealer (AMOS), through a large cluster of look-alike domains. The campaign evolved from broadly serving ClickFix lures to using a server-side…

Apple US

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· Microsoft Security Blog · From open lures to cloaked gates: How a macOS ClickFix campaign learned to hide

ChainDrop supply chain compromise: Anatomy of a self-propagating worm

In this article Attack chain overviewMitigation and protection guidanceIndicators of compromise (IOC)Microsoft Defender XDR detectionsAdvanced hunting queriesLearn more Microsoft Threat Intelligence identified a large-scale npm supply chain attack affecting more than 400 packages across multiple unrelated publishers, including packages associated with major enterprise software ecosystems such as keyv, flat-cache, cache-manager, and others. The malicious releases contain a Mini Shai-Hulud…

npm US

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· Microsoft Security Blog · ChainDrop supply chain compromise: Anatomy of a self-propagating worm

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CaptiveCrunch: Midnight Blizzard targets travelers worldwide for malware delivery and credential theft

In this article The CaptiveCrunch campaignStorm-2945 and Midnight BlizzardCaptiveCrunch tradecraft and toolingHow to protect against CaptiveCrunch activityMicrosoft Defender detections and hunting guidanceIndicators of compromise Since early May 2026, Microsoft Threat Intelligence has observed Storm-2945, a sub-cluster of Midnight Blizzard, conducting widespread but targeted traffic manipulation attacks involving hospitality sector networks served by captive portals worldwide. Despite some…

Microsoft veřejná správa US

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· Microsoft Security Blog · CaptiveCrunch: Midnight Blizzard targets travelers worldwide for malware delivery and credential theft

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New North Korean campaign uses fake coding interviews to steal developer credentials

Elastic Security Labs found a new Contagious Interview campaign, tracked as REF9403, hiding malware inside SVG image files using steganography. To our knowledge, this specific infection chain has not been previously documented. We found it after the DPRK-aligned group targeted our own community Slack workspace with a fake job posting and a "coding challenge" project. Any user who ran the project ended up with a four-stage payload aligned with OTTERCOOKIE: a browser credential and crypto wallet…

US

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· Elastic Security · New North Korean campaign uses fake coding interviews to steal developer credentials

New North Korean campaign uses fake coding interviews to steal developer credentials

Elastic Security Labs found a new Contagious Interview campaign, tracked as REF9403, hiding malware inside SVG image files using steganography. To our knowledge, this specific infection chain has not been previously documented. We found it after the DPRK-aligned group targeted our own community Slack workspace with a fake job posting and a "coding challenge" project. Any user who ran the project ended up with a four-stage payload aligned with OTTERCOOKIE: a browser credential and crypto wallet…

US

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· Elastic Security · New North Korean campaign uses fake coding interviews to steal developer credentials

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UAT-11795 deploys novel Starland RAT and bespoke WLDR C2 implant in financially motivated campaign

Cisco Talos is disclosing UAT-11795, a sophisticated, Russian-speaking, financially motivated adversary that has been conducting a malicious campaign targeting users in the U.S. and Europe since at least June 2025. Talos has discovered that the actor in this campaign delivers a Python-based remote access tool (RAT) that we track as “Starland RAT” and a command-and-control (C2) memory implant known as the “WLDR agent.” The WLDR agent is a sophisticated PowerShell-based C2 memory implant that…

US

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· Cisco Talos · UAT-11795 deploys novel Starland RAT and bespoke WLDR C2 implant in financially motivated campaign

TELEPUZ: a modular MaaS malware spreading via CLICKFIX-VIDAR chains

Elastic Security Labs is tracking an emerging threat named TELEPUZ, which we have discovered spreading widely via a CLICKFIX-VIDAR chain. This malware is in active development and has been operating since late April 2026, according to the infrastructure information we collected. The malware is full-featured, lightweight, and modular. While the number of C2 domains is currently small, the daily volume of builds uploaded to VirusTotal and the rapid pace of updates indicate active development and…

US

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· Elastic Security · TELEPUZ: a modular MaaS malware spreading via CLICKFIX-VIDAR chains

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ClickFix to Cash-Out: Anatomy of a Mexican Banking-Fraud Toolkit

A Mexican banking fraud operation we're tracking as REF6045 doesn't run on autopilot. A human operator is behind the wheel, monitoring infected machines and deciding what happens next. Victims are infected through fake CAPTCHA pages that trick them into running a single command, which installs SCMBANKER, a PowerShell toolkit with components dating back to at least October 2025. Once installed, the operator can see when a victim opens a banking session, lock the screen behind a fake bank warning…

finance telekomunikace US

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· Elastic Security · ClickFix to Cash-Out: Anatomy of a Mexican Banking-Fraud Toolkit

ClickFix to Cash-Out: Anatomy of a Mexican Banking-Fraud Toolkit

A Mexican banking fraud operation we're tracking as REF6045 doesn't run on autopilot. A human operator is behind the wheel, monitoring infected machines and deciding what happens next. Victims are infected through fake CAPTCHA pages that trick them into running a single command, which installs SCMBANKER, a PowerShell toolkit with components dating back to at least October 2025. Once installed, the operator can see when a victim opens a banking session, lock the screen behind a fake bank warning…

finance telekomunikace US

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· Elastic Security · ClickFix to Cash-Out: Anatomy of a Mexican Banking-Fraud Toolkit

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From Bing Search to Ransomware: Bumblebee and AdaptixC2 Deliver Akira

Key Takeaways This case was first reported to customers in a threat brief released in July 2025 and in a public flash alert in August 2025 in partnership with Swisscom B2B CSIRT, which observed another intrusion tied to the same campaign. This report contains data from both intrusions. We plan to release a DFIR Labs […] The post From Bing Search to Ransomware: Bumblebee and AdaptixC2 Deliver Akira appeared first on The DFIR Report.

US

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· The DFIR Report · From Bing Search to Ransomware: Bumblebee and AdaptixC2 Deliver Akira

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Millenium: A RAT Rewritten, A Threat Multiplied

Group-IB analyzes Millenium RAT version 4.*, a remote access trojan that has undergone an architectural shift from .NET to native C++, while continuing to leverage the Telegram Bot API for command and control, requiring no dedicated server infrastructure. This blog also profiles the developer “ShinyEnigma”, and threat actor cluster “Y2K Operators” responsible for active Millenium RAT exploitation campaigns. Over 62,000 compromised endpoints across more than 160 countries have been identified,…

Telegram SG

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· Group-IB · Millenium: A RAT Rewritten, A Threat Multiplied

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Lost in relocation: analysis of a new loader distributing CASTLESTEALER

A previously undocumented Windows loader tracked as OXLOADER is delivering the CASTLESTEALER infostealer via malicious Google Ads, with low detection rates across static engines and sandbox detonations. The loader uses several obfuscation layers (control-flow flattening, opaque predicates, mixed Boolean-Arithmetic), self-modifying decryption stubs, and abuses the Windows .reloc section to stage shellcode. Elastic Security Labs identified OXLOADER in an active campaign targeting one of our…

Microsoft Google US

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· Elastic Security · Lost in relocation: analysis of a new loader distributing CASTLESTEALER

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The GHOST STADIUM Score: Billions At Stake At The World’s Largest Football Tournament

With the 2026 FIFA World Cup just weeks away, Group-IB researchers have uncovered six distinct fraud schemes, four independent threat actors, and over 4,300 fraudulent domains impersonating FIFA's official web presence — including a sophisticated phishing operation run by the Chinese-speaking threat actor GHOST STADIUM, whose campaign could cause losses reaching billions of dollars.

SG

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· Group-IB · The GHOST STADIUM Score: Billions At Stake At The World’s Largest Football Tournament

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Detecting Tycoon 2FA AiTM attacks across Entra ID and Google Workspace

Tycoon 2FA is currently the most prolific Phishing-as-a-Service (PhaaS) platform among AiTM phishing kits. First observed in August 2023 and attributed to Storm-1747 (per Microsoft Threat Intelligence), the kit provides turnkey adversary-in-the-middle (AiTM) capabilities that bypass multi-factor authentication and steal authenticated session tokens from Microsoft 365 and Google Workspace accounts. At its peak, Tycoon 2FA accounted for roughly 62% of phishing attempts blocked by Microsoft,…

Microsoft Google US

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· Elastic Security · Detecting Tycoon 2FA AiTM attacks across Entra ID and Google Workspace

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Supply Chain Attack: rilevata nuova ondata di compromissione pacchetti NPM

Rilevata una campagna su larga scala di compromissione della supply chain nell'ecosistema npm, denominata "Mini Shai-Hulud". L'attacco sfrutta un malware di tipo worm per infiltrarsi negli ambienti di sviluppo e nelle pipeline di Continuous Integration/Continuous Deployment (CI/CD). L'obiettivo primario è l'esfiltrazione di credenziali sensibili e la successiva propagazione automatizzata attraverso la pubblicazione di versioni malevole di pacchetti legittimi.

npm IT

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· CSIRT Itálie (ACN) · Supply Chain Attack: rilevata nuova ondata di compromissione pacchetti NPM

2

Flash Alert: EtherRat and TukTuk C2 End in The Gentleman Ransomware

The EtherRAT malware family was first reported by Sysdig back in December 2025. At that time, the initial access vector was exploitation of CVE-2025-55182 (React2Shell) targeting Linux servers. In March 2026, a Windows variant campaign was reported by Atos, with their investigation showing evidence of activity going back to the previous December. In April, we […] The post Flash Alert: EtherRat and TukTuk C2 End in The Gentleman Ransomware appeared first on The DFIR Report.

KEV ✓ · ransomware EPSS 1.00 CVE-2025-55182 US

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· The DFIR Report · Flash Alert: EtherRat and TukTuk C2 End in The Gentleman Ransomware

Vibe Hacking: Two AI-Augmented Campaigns Target Government and Financial Sectors in Latin America

TrendAI™ Research has identified two emerging threat campaigns—SHADOW-AETHER-040 and SHADOW-AETHER-064—that use agentic AI to drive intrusion operations against government and financial organizations in Latin America, marking these among the first cases we have observed of AI agents executing attacks from initial access to data exfiltration.

veřejná správa finance JP

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· Trend Micro · Vibe Hacking: Two AI-Augmented Campaigns Target Government and Financial Sectors in Latin America

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PCPJack | Cloud Worm Evicts TeamPCP and Steals Credentials at Scale

Executive Summary SentinelLABS has identified PCPJack, a credential theft framework that worms across exposed cloud infrastructure and removes artifacts associated with TeamPCP, a threat actor persona who claimed several high-profile supply chain intrusions throughout early 2026. The toolset harvests credentials from cloud, container, developer, productivity, and financial services, then exfiltrates the data through attacker-controlled infrastructure while attempting to spread to additional…

Docker Kubernetes Redis MongoDB US

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· SentinelLabs · PCPJack | Cloud Worm Evicts TeamPCP and Steals Credentials at Scale

TCLBANKER: Brazilian Banking Trojan Spreading via WhatsApp and Outlook

Elastic Security Labs identified a new Brazilian banking trojan that we are tracking as TCLBANKER, a malware family we assess is a major update of the MAVERICK/SORVEPOTEL family. The campaign, tracked as REF3076, features a loader with robust anti-analysis capabilities that deploys two embedded .NET Reactor-protected modules: a full-featured banking trojan and a worm module for self-propagation. The banking trojan monitors the victim's browser address bar via UI Automation, targeting 59…

Logitech finance US

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· Elastic Security · TCLBANKER: Brazilian Banking Trojan Spreading via WhatsApp and Outlook

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Bissa Scanner Exposed: AI-Assisted Mass Exploitation and Credential Harvesting

Key Takeaways We identified an exposed server that provided unusual visibility into a large-scale, multi-victim exploitation and collection operation. Artifacts on the host showed that Claude Code and OpenClaw were embedded in the operator’s day-to-day workflow, supporting troubleshooting, orchestration, and refinement of the collection pipeline. This AI-assisted workflow resulted in the modular platform Bissa scanner […] The post Bissa Scanner Exposed: AI-Assisted Mass Exploitation and…

US

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· The DFIR Report · Bissa Scanner Exposed: AI-Assisted Mass Exploitation and Credential Harvesting

1

Phantom in the vault: Obsidian abused to deliver PhantomPulse RAT

A follow-up publication will provide a deeper technical analysis of PHANTOMPULSE itself, covering its injection engines, persistence internals, and C2 protocol in greater detail. Preamble Elastic Security Labs has identified a novel social engineering campaign that abuses the popular note-taking application, Obsidian, as an initial access vector. The campaign, which we track as REF6598, targets individuals in the financial and cryptocurrency sectors through elaborate social engineering on…

Obsidian Shell Commands Hider finance US

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· Elastic Security · Phantom in the vault: Obsidian abused to deliver PhantomPulse RAT

2

Fake Installers to Monero: A Multi-Tool Mining Operation

Introduction Elastic Security Labs has been tracking a financially motivated operation, designated REF1695, that has been active since at least late 2023. The operator deploys a combination of RATs, cryptominers, and custom XMRig loaders through fake installer packages. Across all observed campaigns, the infection chains share a consistent packing technique, overlapping C2 infrastructure, and common social engineering patterns, linking them to a single operator. Beyond cryptomining, the threat…

US

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· Elastic Security · Fake Installers to Monero: A Multi-Tool Mining Operation

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Pawn Storm Campaign Deploys PRISMEX, Targets Government and Critical Infrastructure Entities

This blog discusses the steganography, cloud abuse, and email-based backdoors used against the Ukrainian defense supply chain in the latest Pawn Storm campaign that TrendAI™ Research observed and analyzed.

obrana veřejná správa JP

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· Trend Micro · Pawn Storm Campaign Deploys PRISMEX, Targets Government and Critical Infrastructure Entities

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From Invitation to Infection: How SILENTCONNECT Delivers ScreenConnect

Introduction Elastic Security Labs is observing malicious campaigns delivering a multi-stage infection involving a previously undocumented loader. The infection begins when users are diverted to a Cloudflare Turnstile CAPTCHA page under the guise of a digital invitation. After the link is clicked, a VBScript file is downloaded to the machine. Upon execution, the script retrieves C# source code, which is then compiled and executed in memory using PowerShell. The final payload observed in these…

ConnectWise US

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· Elastic Security · From Invitation to Infection: How SILENTCONNECT Delivers ScreenConnect