Ragnar Locker Gang Warns Victims Not to Call the FBI

All that the FBI/ransomware negotiators/investigators do is muck things up, so we’re going to publish your stuff if you call for help, the Ragnar Locker ransomware gang announced on its darknet data-leak site. In an announcement posted this week and seen by Bleeping Computer, the ransomware...

Jenkins Hit as Atlassian Confluence Cyberattacks Widen

A just-patched, critical remote code-execution RCE vulnerability in the Atlassian Confluence server platform is suffering wide-scale exploitation, the Feds have warned – as evidenced by an attack on the popular Jenkins open-source automation engine. Atlassian Confluence is a collaboration platfor...

Latest Atlassian Confluence Flaw Exploited to Breach Jenkins Project Server

The maintainers of Jenkins—a popular open-source automation server software—have disclosed a security breach after unidentified threat actors gained access to one of their servers by exploiting a recently disclosed vulnerability in Atlassian Confluence service to install a cryptocurrency miner. T...

Cybercriminals Abusing Internet-Sharing Services to Monetize Malware Campaigns

Threat actors are capitalizing on the growing popularity of proxyware platforms like Honeygain and Nanowire to monetize their own malware campaigns, once again illustrating how attackers are quick to repurpose and weaponize legitimate platforms to their advantage. "Malware is currently leveraging...

Feds Warn of Ransomware Attacks Ahead of Labor Day

Though lots of people might be taking some time off over the Labor Day weekend, threat actors likely won’t — which means organizations should remain particularly vigilante about the potential for ransomware attacks, the federal government has warned. Citing historical precedence, the FBI and CISA...

New Microsoft Exchange 'ProxyToken' Flaw Lets Attackers Reconfigure Mailboxes

Details have emerged about a now-patched security vulnerability impacting Microsoft Exchange Server that could be weaponized by an unauthenticated attacker to modify server configurations, thus leading to the disclosure of Personally Identifiable Information PII. The issue, tracked as...

The Underground Economy: Recon, Weaponization & Delivery for Account Takeovers

This is Part I of a two-part blog series taking readers inside the criminal enterprise that is account-takeover fraud. For part II, please click here. With account takeover ATO attacks on the rise, stopping threat actors in the early phases of the kill chain will help today’s defenders gain an...

Winning the Cyber-Defense Race: Understand the Finish Line

If you ask organizations about their top objectives, you will likely hear they need to increase visibility, reduce toolsets and adopt automation to counteract the cybersecurity skills gap. And what most don’t realize is that these initiatives are driven by hurdles the industry has created for...

F5 Releases Critical Security Patch for BIG-IP and BIG-IQ Devices

Enterprise security and network appliance vendor F5 has released patches for more than two dozen security vulnerabilities affecting multiple versions of BIG-IP and BIG-IQ devices that could potentially allow an attacker to perform a wide range of malicious actions, including accessing arbitrary...

CVE-2021-22922

A flaw was found in curl in the way curl handles a file hash mismatch after downloading content using the Metalink feature. This flaw allows malicious actors controlling a hosting server to trick users into downloading malicious content. The highest threat from this vulnerability is to integrity...

Custom WhatsApp Build Delivers Triada Malware

Triada malware, both pernicious and persistent, has resurfaced. Its most recent sighting is buried inside an advertising component of a modified version of the popular WhatsApp messenger called FM WhatsApp. The malware, first spotted by researchers at Kaspersky in 2016, is a type of mobile...

CISA Releases Five Pulse Secure-Related MARs

As part of CISA’s ongoing response to Pulse Secure compromises, CISA has analyzed five malware samples related to exploited Pulse Secure devices. CISA encourages users and administrators to review the following five malware analysis reports MARs for threat actor tactics, techniques, and procedure...

Urgent: Protect Against Active Exploitation of ProxyShell Vulnerabilities

Malicious cyber actors are actively exploiting the following ProxyShell vulnerabilities: CVE-2021-34473, CVE-2021-34523, and CVE-2021-31207. An attacker exploiting these vulnerabilities could execute arbitrary code on a vulnerable machine. CISA strongly urges organizations to identify vulnerable...

Nigerian Threat Actors Solicit Employees to Deploy Ransomware for Cut of Profits

Researchers have discovered a Nigerian threat actor trying to turn an organization’s employees into insider threats by soliciting them to deploy ransomware for a cut of the ransom profits. Researchers at Abnormal Security identified and blocked a number of emails sent earlier this month to some i...

Top Routinely Exploited Vulnerabilities

Summary This Joint Cybersecurity Advisory was coauthored by the U.S. Cybersecurity and Infrastructure Security Agency CISA, the Australian Cyber Security Centre ACSC, the United Kingdom’s National Cyber Security Centre NCSC, and the U.S. Federal Bureau of Investigation FBI. This advisory provides...

Threat actors using CAPTCHA to evade phishing, malware detection

By Waqas According to researchers, cybercriminals are abusing legitimate challenge and response services like Google’s reCAPTCHA or deploying customized fake CAPTCHA-like validation. This is a post from HackRead.com Read the original post: Threat actors using CAPTCHA to evade phishing, malware...

End-to-end encryption device setup did not verify public key

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HolesWarm Malware Exploits Unpatched Windows, Linux Servers

By leveraging more than 20 known vulnerabilities in Linux and Windows servers, the HolesWarm cryptominer malware has been able to break into more than 1,000 cloud hosts just since June. The basic cryptominer botnet has been so successful at juggling so many different known vulnerabilities between...

Have you patched the vulnerabilities in Microsoft Exchange Server?

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here. Microsoft Exchange Server vulnerabilities have been officially patched for five months now. These vulnerabilities are actively exploited by multiple threat actors named DeadRinger. DeadRinger has been affecting the...

Exchange Servers Under Active Attack via ProxyShell Bugs

Researchers’ Microsoft Exchange server honeypots are being actively exploited via ProxyShell: The name of an attack disclosed at Black Hat last week that chains three vulnerabilities to enable unauthenticated attackers to perform remote code execution RCE and snag plaintext passwords. In his Blac...