New Tomiris Backdoor Found Linked to Hackers Behind SolarWinds Cyberattack

Cybersecurity researchers on Wednesday disclosed a previously undocumented backdoor likely designed and developed by the Nobelium advanced persistent threat APT behind last year's SolarWinds supply chain attack, joining the threat actor's ever-expanding arsenal of hacking tools...

DarkHalo after SolarWinds: the Tomiris connection

Background In December 2020, news of the SolarWinds incident took the world by storm. While supply-chain attacks were already a documented attack vector leveraged by a number of APT actors, this specific campaign stood out due to the extreme carefulness of the attackers and the high-profile natur...

How nation-state attackers like NOBELIUM are changing cybersecurity

This is the first post in a four-part series on the NOBELIUM nation-state cyberattack. Microsoft started telling the industry about this extremely advanced cyberattack in December 2020. The NOBELIUM blog series—which mirrors Microsoft’s four-part video series “Decoding NOBELIUM”—will pull the...

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...

Iranian APT Lures Defense Contractor in Catfishing-Malware Scam

Most people have probably heard of catfishing. That’s when someone adopts a fake online persona, usually to trick someone into falling in love. Now, threat actors have developed their own spin on the grift, developing appealing — objectively hot — profiles to charm victims into downloading malwar...

PyPI Python Package Repository Patches Critical Supply Chain Flaw

The maintainers of Python Package Index PyPI last week issued fixes for three vulnerabilities, one among which could be abused to achieve arbitrary code execution and take full control of the official third-party software repository. The security weaknesses were discovered and reported by Japanes...

A New Critical SolarWinds Zero-Day Vulnerability Under Active Attack

SolarWinds, the Texas-based company that became the epicenter of a massive supply chain attack late last year, has issued patches to contain a remote code execution flaw in its Serv-U managed file transfer service. The fixes, which target Serv-U Managed File Transfer and Serv-U Secure FTP product...

Kaseya Patches Zero-Days Used in REvil Attacks

Kaseya made good on its promise to issue patches by July 11. On Saturday, the company behind the Virtual System/Server Administrator VSA platform that got walloped by the REvil ransomware-as-a-service RaaS gang in a massive supply-chain attack released urgent updates to address critical zero-day...

Kaseya Releases Patches for Flaws Exploited in Widespread Ransomware Attack

Florida-based software vendor Kaseya on Sunday rolled out urgent updates to address critical security vulnerabilities in its Virtual System Administrator VSA solution that was used as a jumping off point to target as many as 1,500 businesses across the globe as part of a widespread supply-chain...

REvil Ransomware gang behind the Kaseya VSA Supply-Chain attack

THREAT LEVEL: Red. For a detailed advisory, download the pdf file here. The REvil ransomware group was successful in carrying out a supply chain attack by exploiting the zero-day vulnerability CVE-2021-30116 in the Kaseya VSA server and delivering a malicious script to all the computer devices...

Analyzing the REvil Ransomware Attack

Over the past year, there has been a rise in extortion malware, e.g. Nefilim and Darkside, which steal and threaten to publish sensitive data or encrypt it until a ransom is paid. Nowadays, cybercriminals use various techniques to gain their initial foothold within a network in the organization...

Kaseya Rules Out Supply-Chain Attack; Says VSA 0-Day Hit Its Customers Directly

U.S. technology firm Kaseya, which is firefighting the largest ever supply-chain ransomware strike on its VSA on-premises product, ruled out the possibility that its codebase was unauthorizedly tampered with to distribute malware. While initial reports raised speculations that REvil, the ransomwa...

REvil Used 0-Day in Kaseya Ransomware Attack, Demands $70 Million Ransom

Amidst the massive supply-chain ransomware attack that triggered an infection chain compromising thousands of businesses on Friday, new details have emerged about how the notorious Russia-linked REvil cybercrime gang may have pulled off the unprecedented hack. The Dutch Institute for Vulnerabilit...

CISA-FBI Guidance for MSPs and their Customers Affected by the Kaseya VSA Supply-Chain Ransomware Attack

CISA and the Federal Bureau of Investigation FBI continue to respond to the recent supply-chain ransomware attack leveraging a vulnerability in Kaseya VSA software against multiple managed service providers MSPs and their customers. CISA and FBI strongly urge affected MSPs and their customers to...

Kaseya Supply-Chain Attack Hits Nearly 40 Service Providers With REvil Ransomware

Threat actors behind the notorious REvil cybercrime operation appear to have pushed ransomware via an update for Kaseya's IT management software, hitting around 40 customers worldwide, in what's an instance of a widespread supply-chain ransomware attack. "Beginning around mid-day EST/US on Friday...

A New Kind of Ransomware Tsunami Hits Hundreds of Companies

An apparent supply chain attack exploited Kaseya's IT management software to encrypt a "monumental" number of victims all at once...

Mongolian Certificate Authority Hacked to Distribute Backdoored CA Software

In yet another instance of software supply chain attack, unidentified hackers breached the website of MonPass, one of Mongolia's major certificate authorities, to backdoor its installer software with Cobalt Strike binaries. The trojanized client was available for download between February 8, 2021...

Mitigating attacks in serverless environments

Serverless computing has become the fastest-growing segment in the cloud services market. The benefits are clear and significant: cost savings and lower operational overhead, giving development teams full control over code and flexibility in the infrastructure. This also means that, in terms of...

One-Click Exploit Could Have Let Attackers Hijack Any Atlassian Account

Cybersecurity researchers on Wednesday disclosed critical flaws in the Atlassian project and software development platform that could be exploited to take over an account and control some of the apps connected through its single sign-on SSO capability. "With just one click, an attacker could have...

Atlassian Bugs Could Have Led to 1-Click Takeover

Atlassian, a platform used by 180,000 customers to engineer software and manage projects, could have been hijacked with a single click due to security flaws, researchers have disclosed. On Thursday, Check Point Research CPR published a report PDF outlining how an attacker could have exploited the...