Microsoft Takes Down Malware-Signing Service Behind Ransomware Attacks

Microsoft on Tuesday said it disrupted a malware-signing-as-a-service MSaaS operation that weaponized the company's Artifact Signing system to deliver malicious code and conduct ransomware and other attacks, compromising thousands of machines and networks across the world. The tech giant attribut...

Exposing Fox Tempest: A malware-signing service operation

In this article 1. Fox Tempest’s role and impact 2. Fox Tempest’s malware signing as a service infrastructure 3. Defending against Fox Tempest-enabled attacks 4. Microsoft Defender detections 5. Indicators of compromise Fox Tempest is a financially motivated threat actor that operates a...

CrashFix Chrome Extension Delivers ModeloRAT Using ClickFix-Style Browser Crash Lures

Cybersecurity researchers have disclosed details of an ongoing campaign dubbed KongTuke that used a malicious Google Chrome extension masquerading as an ad blocker to deliberately crash the web browser and trick victims into running arbitrary commands using ClickFix-like lures to deliver a...

Microsoft Revokes 200 Fraudulent Certificates Used in Rhysida Ransomware Campaign

Microsoft on Thursday disclosed that it revoked more than 200 certificates used by a threat actor it tracks as Vanilla Tempest to fraudulently sign malicious binaries in ransomware attacks. The certificates were "used in fake Teams setup files to deliver the Oyster backdoor and ultimately deploy...

Unwrapping the emerging Interlock ransomware attack

Cisco Talos Incident Response Talos IR recently observed an attacker conducting big-game hunting and double extortion attacks using the relatively new Interlock ransomware. Our analysis uncovered that the attacker used multiple components in the delivery chain including a Remote Access Tool RAT...

Rhysida Ransomware’s Decryptor is Now in Action

Summary: The Rhysida ransomware-as-a-service RaaS group poses a significant global threat, targeting diverse sectors. Recently, an implementation vulnerability in the source code of the Rhysida ransomware has been discovered. By exploiting this vulnerability to reconstruct encryption keys, it...

Rhysida Ransomware Cracked, Free Decryption Tool Released

Cybersecurity researchers have uncovered an "implementation vulnerability" that has made it possible to reconstruct encryption keys and decrypt data locked by Rhysida ransomware. The findings were published last week by a group of researchers from Kookmin University and the Korea Internet and...

Ubisoft Hackers Scrambled for 900GB of Data Before Foiled

By Deeba Ahmed The cyberattack on Ubisoft came just days after hackers from the Rhysida ransomware gang targeted Insomniac Games, the developers of Spider-Man 2. This is a post from HackRead.com Read the original post: Ubisoft Hackers Scrambled for 900GB of Data Before Foiled...

Spider-Man Developer Insomniac Games Hit by Rhysida Ransomware

By Waqas Another day, another gaming giant claimed by a ransomware group. This is a post from HackRead.com Read the original post: Spider-Man Developer Insomniac Games Hit by Rhysida Ransomware...

CISA and FBI Issue Warning About Rhysida Ransomware Double Extortion Attacks

The threat actors behind the Rhysida ransomware engage in opportunistic attacks targeting organizations spanning various industry sectors. The advisory comes courtesy of the U.S. Cybersecurity and Infrastructure Security Agency CISA, the Federal Bureau of Investigation FBI, and the Multi-State...

CISA, FBI, and MS-ISAC Release Advisory on Rhysida Ransomware

Today, the Cybersecurity and Infrastructure Security Agency CISA, the Federal Bureau of Investigation FBI, and the Multi-State Information Sharing and Analysis Center MS-ISAC released a joint Cybersecurity Advisory CSA, StopRansomware: Rhysida Ransomware, to disseminate known Rhysida ransomware...

Stealer for PIX payment system, new Lumar stealer and Rhysida ransomware

Introduction As a cybersecurity company, Kaspersky is constantly dealing with known and brand-new malware samples. As part of our crimeware reporting service, we provide our customers with technical reports on the evolution of existing crimeware families, as well as newly emerging ones. In this...

Rhysida Ransomware

Rhysida Ransomware By Alexandre Mundo, Max Kersten, and Leandro Velasco · October 9, 2023 New ransomware victims are made every day by ransom gangs with a variety of ransomware malware families, one of which is the Rhysida ransomware family. Within this blog, an anonymised version of an attack by...

Rhysida Ransomware

Rhysida Ransomware By Leandro Velasco · October 9, 2023 This blog was also written by Alexandre Mundo and Max Kersten New ransomware victims are made every day by ransom gangs with a variety of ransomware malware families, one of which is the Rhysida ransomware family. Within this blog, an...

Threat Actors Targeting Microsoft SQL Servers to Deploy FreeWorld Ransomware

Threat actors are exploiting poorly secured Microsoft SQL MS SQL servers to deliver Cobalt Strike and a ransomware strain called FreeWorld. Cybersecurity firm Securonix, which has dubbed the campaign DBJAMMER, said it stands out for the way the toolset and infrastructure is employed. "Some of the...

Knocking the Surface of Rhysida Ransomware

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary The Rhysida ransomware campaign is rapidly gaining notoriety, driven by a series of successful infiltrations into healthcare institutions. This surge in attacks requires government entities and the targe...

An Overview of the New Rhysida Ransomware Targeting the Healthcare Sector

In this blog entry, we will provide details on Rhysida, including its targets and what we know about its infection chain...

What Cisco Talos knows about the Rhysida ransomware

Cisco Talos is aware of the recent advisory published by the U.S. Department of Health and Human Services HHS warning the healthcare industry about Rhysida ransomware activity. As weve discussed recently, there has been huge growth in the ransomware and extortion space, potentially linked to the...