RTM Locker's First Linux Ransomware Strain Targeting NAS and ESXi Hosts

The threat actors behind RTM Locker have developed a ransomware strain that's capable of targeting Linux machines, marking the group's first foray into the open source operating system. "Its locker ransomware infects Linux, NAS, and ESXi hosts and appears to be inspired by Babuk ransomware's leak...

RTM Locker's First Linux Ransomware Strain Targeting NAS and ESXi Hosts

The threat actors behind RTM Locker have developed a ransomware strain that's capable of targeting Linux machines, marking the group's first foray into the open source operating system. "Its locker ransomware infects Linux, NAS, and ESXi hosts and appears to be inspired by Babuk ransomware's leak...

Microsoft Confirms PaperCut Servers Used to Deliver LockBit and Cl0p Ransomware

Microsoft has confirmed that the active exploitation of PaperCut servers is linked to attacks that are designed to deliver Cl0p and LockBit ransomware families. The tech giant's threat intelligence team is attributing a subset of the intrusions to a financially motivated actor it tracks under the...

Microsoft Confirms PaperCut Servers Used to Deliver LockBit and Cl0p Ransomware

Microsoft has confirmed that the active exploitation of PaperCut servers is linked to attacks that are designed to deliver Cl0p and LockBit ransomware families. The tech giant's threat intelligence team is attributing a subset of the intrusions to a financially motivated actor it tracks under the...

Healthy security habits to fight credential breaches: Cyberattack Series

Fifty percent of Microsoft cybersecurity recovery engagements relate to ransomware,1 and 61 percent of all breaches involve credentials.2 In this second report in our ongoing Cyberattack Series, we look at the steps taken to discover, understand, and respond to a push-bombing request that targete...

Healthy security habits to fight credential breaches: Cyberattack Series

Fifty percent of Microsoft cybersecurity recovery engagements relate to ransomware,1 and 61 percent of all breaches involve credentials.2 In this second report in our ongoing Cyberattack Series, we look at the steps taken to discover, understand, and respond to a push-bombing request that targete...

Quarterly Report: Incident Response Trends in Q1 2023

Web shell usage spikes in Q1 compared to previous quarters, correlating with higher instances of exploitation of public-facing applications. In a novel increase compared to previous quarters, Cisco Talos Incident Response Talos IR reports that web shells were the most-observed threat in the first...

Update your PaperCut application servers now: Exploits in the wild

PaperCut, maker of print management solutions, has urged product users to update as soon as possible. A security vulnerability which exploits unpatched servers has been seen in the wild, with serious ramifications for any organisation impacted. Two specific vulnerabilities are at the heart of thi...

Iranian Hackers Launch Sophisticated Attacks Targeting Israel with PowerLess Backdoor

An Iranian nation-state threat actor has been linked to a new wave of phishing attacks targeting Israel that's designed to deploy an updated version of a Windows backdoor called PowerLess. Cybersecurity firm Check Point is tracking the activity cluster under its mythical creature handle Educated...

Actors, Threats and Vulnerabilities 17 to 23 April 2023

For a detailed threat digest, download the pdf file here Summary For a detailed threat digest, download the pdf file here HiveForce Labs recently made several significant discoveries related to cybersecurity threats. Over the past week, they identified a total of ten attacks that were executed...

A New CrossLock Ransomware Threat with Cross-Platform Capabilities and Double Extortion Techniques

Threat Level Attack Report For a detailed threat advisory, download the pdf file here Summary CrossLock ransomware, implemented in Go programming language, uses double extortion technique to encrypt and exfiltrate data, posing a significant threat to businesses and organizations. To receive...

Black Basta ransomware attacks Yellow Pages Canada

The Canadian Yellow Pages Group has confirmed it recently became victim of a cyberattack. The Black Basta ransomware group has claimed responsibility for this attack by posting about Yellow Pages on the "Basta News" leak site. When such a post shows up, it usually means that negotiations with the...

Ransomware Hackers Using AuKill Tool to Disable EDR Software Using BYOVD Attack

Threat actors are employing a previously undocumented "defense evasion tool" dubbed AuKill that's designed to disable endpoint detection and response EDR software by means of a Bring Your Own Vulnerable Driver BYOVD attack. "The AuKill tool abuses an outdated version of the driver used by version...

Ransomware Hackers Using AuKill Tool to Disable EDR Software Using BYOVD Attack

Threat actors are employing a previously undocumented "defense evasion tool" dubbed AuKill that's designed to disable endpoint detection and response EDR software by means of a Bring Your Own Vulnerable Driver BYOVD attack. "The AuKill tool abuses an outdated version of the driver used by version...

New All-in-One "EvilExtractor" Stealer for Windows Systems Surfaces on the Dark Web

A new "all-in-one" stealer malware named EvilExtractor also spelled Evil Extractor is being marketed for sale for other threat actors to steal data and files from Windows systems. "It includes several modules that all work via an FTP service," Fortinet FortiGuard Labs researcher Cara Lin said. "I...

New All-in-One "EvilExtractor" Stealer for Windows Systems Surfaces on the Dark Web

A new "all-in-one" stealer malware named EvilExtractor also spelled Evil Extractor is being marketed for sale for other threat actors to steal data and files from Windows systems. "It includes several modules that all work via an FTP service," Fortinet FortiGuard Labs researcher Cara Lin said. "I...

Russian Hackers Suspected in Ongoing Exploitation of Unpatched PaperCut Servers

Print management software provider PaperCut said that it has "evidence to suggest that unpatched servers are being exploited in the wild," citing two vulnerability reports from cybersecurity company Trend Micro. "PaperCut has conducted analysis on all customer reports, and the earliest signature ...

Russian Hackers Suspected in Ongoing Exploitation of Unpatched PaperCut Servers

Print management software provider PaperCut said that it has "evidence to suggest that unpatched servers are being exploited in the wild," citing two vulnerability reports from cybersecurity company Trend Micro. "PaperCut has conducted analysis on all customer reports, and the earliest signature ...

A week in security (April 17 - 23)

Last week on Malwarebytes Labs: Fake Chrome updates spread malware Woman tracks down and turns table on Airbnb scammer Update Chrome now! Google patches actively exploited flaw Beware: Fake IRS tax email wants your Microsoft account Ransomware in Germany, April 2022 - March 2023 Living Off the La...

Threat Roundup for April 14 to April 21

Today, Talos is publishing a glimpse into the most prevalent threats weve observed between April 14 and April 21. As with previous roundups, this post isnt meant to be an in-depth analysis. Instead, this post will summarize the threats weve observed by highlighting key behavioral characteristics,...