Microsoft Purview data security mitigations for BazaCall and other human-operated data exfiltration attacks

I recently worked with an enterprise customer who experienced a data exfiltration attack using the characteristics of the BazaCall campaign. BazaCall can be both a ransomware and data exfiltration attack that are used together to increase pressure on and damage to the victim. Microsoft Purview ha...

New Yashma Ransomware Variant Targets Multiple English-Speaking Countries

An unknown threat actor is using a variant of the Yashma ransomware to target various entities in English-speaking countries, Bulgaria, China, and Vietnam at least since June 4, 2023. Cisco Talos, in a new write-up, attributed the operation with moderate confidence to an adversary of likely...

Ransomware on the Move: Evolving Exploitation Techniques and the Active Pursuit of Zero-Days

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Ransomware on the Move: Evolving Exploitation Techniques and the Active Pursuit of Zero-Days

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Code leaks are causing an influx of new ransomware actors

Ransomware gangs are consistently rebranding or merging with other groups, as highlighted in our 2022 Year in Review, or these actors work for multiple ransomware-as-a-service RaaS outfits at a time, and new groups are always emerging. This trend is already continuing this year. Since 2021, there...

New threat actor targets Bulgaria, China, Vietnam and other countries with customized Yashma ransomware

Cisco Talos discovered an unknown threat actor, seemingly of Vietnamese origin, conducting a ransomware operation that began at least as early as June 4, 2023. This ongoing attack uses a variant of the Yashma ransomware likely to target multiple geographic areas by mimicking WannaCry...

A week in security (July 31 - August 6)

Last week on Malwarebytes Labs: The end looms for Meta's behavioural advertising in Europe Microsoft Teams used in phishing campaign to bypass multi-factor authentication Film companies lose battle to unmask Reddit users FAQ: How does Malwarebytes ransomware rollback work? How to protect your...

TargetCompany Ransomware Abuses FUD Obfuscator Packers

In this entry, we detail our analysis of how the TargetCompany ransomware abused an iteration of fully undetectable FUD obfuscator engine BatCloak to infect vulnerable systems...

FAQ: How does Malwarebytes ransomware rollback work?

As the old cybersecurity saying goes: "Its not if, but when." Everyone and their grandma have repeated this foreboding maxim about the nature of ransomware attacks, but sadly, that doesn't make it any less true. Time and again were reminded that ransomware can slip past even the best defenses...

Half-Year in Review: Recapping the top threats and security trends so far in 2023

From new ransomware groups, a growing mercenary space, espionage campaigns, supply chain attacks, and new "as a service" tools popping up, theres a lot to talk about already in the first half of 2023. Here are the main threats weve covered on our blog up until the end of June 2023. The timeline i...

Hey, are you REALLY ready to go on vacation? (No, you aren't)

Are you ready for a challenge? A real challenge? Do you laugh in the face of shark cages, scoff at the Marathon des Sables, and waft a dismissive finger in the direction of the Everest ascent? Are you ready to conquer the impossible? If so, then you might be ready for the ultimate challenge--taki...

Microsoft Flags Growing Cybersecurity Concerns for Major Sporting Events

Microsoft is warning of the threat malicious cyber actors pose to stadium operations, noting that the cyber risk surface of live sporting events is "rapidly expanding." "Information on athletic performance, competitive advantage, and personal information is a lucrative target," the company said i...

Global ransomware attacks at an all-time high, shows latest 2023 State of Ransomware report

Ransomware attacks have shown no signs of slowing down in 2023. A new report from the Malwarebytes Threat Intelligence team shows 1,900 total ransomware attacks within just four countries--the US, Germany, France, and the UK--in one year. The findings, compiled together in the 2023 State of...

PT-2023-5957 · Php +10 · Php +10

Name of the Vulnerable Software and Affected Versions: PHP versions 8.0. before 8.0.30 PHP versions 8.1. before 8.1.22 PHP versions 8.2. before 8.2.8 Description: The issue is caused by insufficient length checking when loading phar files, leading to a stack buffer overflow, which can result in...

Cloud Service Provider Cloudzy Accused of Aiding Ransomware and APTs

By Deeba Ahmed Cloudzy is registered in the United States, and its CEO is an Iranian national. This is a post from HackRead.com Read the original post: Cloud Service Provider Cloudzy Accused of Aiding Ransomware and APTs...

Iranian Company Cloudzy Accused of Aiding Cybercriminals and Nation-State Hackers

Services offered by an obscure Iranian company known as Cloudzy are being leveraged by multiple threat actors, including cybercrime groups and nation-state crews. "Although Cloudzy is incorporated in the United States, it almost certainly operates out of Tehran, Iran – in possible violation of U....

The Bug Report - July 2023 Edition

The Bug Report – July 2023 Edition By Trellix · August 02, 2023 This story was also written by John Dunlap. A Storm is Brewing! Why am I here? Summer is now in full swing, and our July Bug Report is similarly coming out swinging. This month comes with a red-hot list of software vulnerabilities...

The Bug Report - July 2023 Edition

The Bug Report – July 2023 Edition By Trellix · August 02, 2023 This story was also written by John Dunlap. A Storm is Brewing! Why am I here? Summer is now in full swing, and our July Bug Report is similarly coming out swinging. This month comes with a red-hot list of software vulnerabilities...

Microsoft Defender for Office 365 gets highest rating in SE Labs Enterprise Email Security Services test for Q1 2023

In the ever-evolving world of cybersecurity, email remains a primary attack vector for cybercriminals, making effective email protection a foundational piece of any organization’s security strategy. In Q1 2023, Microsoft was once again part of an evaluation of email security platforms conducted b...

Supply chain attacks disrupt emergency services communications

A supply chain attack rendered two ambulance trusts incapable of accessing electronic patient records in the UK. The two services, which operate in a region of 12 million people, were not targeted directly. Instead, the attack was aimed at a third-party technology provider used by both the South...