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Last week, unknown threat actors started targeting, en masse, VMware ESXi hypervisors using CVE-2021-21974, an easily exploitable pre-authorization remote code execution vulnerability. Experts from Bitdefender Labs have been monitoring these exploitation attempts. Guided by our telemetry, we are providing a technical advisory to describe these attacks and document our own detections in the wild.…
Note: This Cybersecurity Advisory (CSA) is part of an ongoing #StopRansomware effort to publish advisories for network defenders that detail various ransomware variants and various ransomware threat actors. These #StopRansomware advisories detail historically and recently observed tactics, techniques, and procedures (TTPs) and indicators of compromise (IOCs) to help organizations protect against ransomware.…
On a bi-weekly basis, FortiGuard Labs gathers data on ransomware variants of interest that have been gaining traction within our datasets and the OSINT community. The Ransomware Roundup report aims to provide readers with brief insights into the evolving ransomware landscape and the Fortinet solutions that protect against those variants.…
The FortiGuard Labs team has discovered another new 0-day attack in a PyPI package (Python Package Index) called “web3-essential”. It was discovered on January 30, 2023, by monitoring an open-source ecosystem. The package was published on January 26, 2023, the same day as its author, ‘Trexon’, joined the repository.…
Just like Hollywood has its own celebrities and well-known actors, the world of malicious open-source packages also has its own notorious players. And just like Hollywood stars, these threat actors don’t always stay in the spotlight. They can take breaks and reemerge with new tactics, techniques, and tools.…
It will take some time before all of us are able to forget about the Southwest flight debacle of 2022. As one of the world’s leading carriers, they boasted one of the lowest consumer complaint rates in 2021.1 Of course, that ranking may well change after hundreds of thousands of passengers were left stranded over the holidays when more than 16,700 Southwest flights were canceled.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…
FortiGuard Labs recently captured Excel documents in the Microsoft OLE Compound File format that contain malicious VBA Macros. Their file names are Pago_detalles.xls, makbuzu.xls, and Pago.xls. I then conducted deep research on them and found that they all belong to the same malicious campaign that cryptojacks systems to mine for Monero (XMR) cryptocurrency.…
by Joe Stewart and Keegan Keplinger, Security Researchers with eSentire‘s Threat Response Unit (TRU)
Executive SummaryFor the past 16 months, eSentire’s security research team, the Threat Response Unit (TRU), has been tracking one of the most capable and stealthy malware suites — Golden Chickens. Golden Chickens is the “cyber weapon of choice” for three of the top money making, longest-running Internet crime groups: Russia-based FIN6 and Cobalt Group and Belarus-based Evilnum.…
This post is also available in: 日本語 (Japanese)
Executive SummaryRecently, our Unit 42 incident response team was engaged in a Black Basta breach response that uncovered several tools and malware samples on the victim’s machines, including GootLoader malware, Brute Ratel C4 red-teaming tool and an older PlugX malware sample.…
Kronos Malware Reemerges with Increased Functionality
phishing emails, and organizations should implement email filtering and other security measures to block malicious emails.
If a system is suspected to be infected with Kronos, it is important to take the system offline immediately and perform a thorough scan using antivirus and anti-malware tools.…
Last updated at Wed, 25 Jan 2023 20:23:13 GMT
Emergent threats evolve quickly, and as we learn more about this vulnerability, this blog post will evolve, too.
Rapid7 is responding to various compromises arising from the exploitation of CVE-2022-47966, a pre-authentication remote code execution (RCE) vulnerability impacting at least 24 on-premise ManageEngine products.…
At the end of November 2022, experts from Bitdefender Labs started to notice an increase in attacks using ProxyNotShell/OWASSRF exploits chains to target on-premises Microsoft Exchange deployments. SSRF attacks on Microsoft Exchange servers are some of the most popular and routinely exploited vulnerabilities. We decided to release a technical advisory describing these attacks, but also documenting some of the recent attacks that we’ve detected in the wild. …
Since May 2022, eSentire’s Threat Response Unit (TRU) has observed 11 cases of Raspberry Robin infections. Although the initial access vector is an infected USB drive, however it’s unclear how the USB drives were initially infected. Raspberry Robin hosts its payloads on compromised QNAP servers with the malicious files being stored on USB drives as shortcuts.…
Investigators: Nico Agnese, Maor Elizen, Marion Habiby, Ryan Joye, Vikas Parthasarathy, Adam Sell, Mikhail Venkov
In this post:
HUMAN’s Satori Threat Intelligence and Research Team uncovered and took down a sophisticated ad fraud operation we’ve dubbed VASTFLUX. This private takedown of an expansive and complex threat embodies the power of modern defense and collective protection.…Written by Jon DiMaggio.
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I gotta story to tell…
The LockBit ransomware gang is one of the most notorious organized cybercrime syndicates that exists today. The gang is behind attacks targeting private-sector corporations and other high-profile industries worldwide. News and media outlets have documented many LockBit attacks, while security vendors offer technical assessments explaining how each occurred.…
On a bi-weekly basis, FortiGuard Labs gathers data on ransomware variants of interest that have been gaining traction within our datasets and the OSINT community. The Ransomware Roundup report provides readers with brief insights into the evolving ransomware landscape and the Fortinet solutions that protect against those variants.…
In recent weeks there has been a noticeable increase in malicious search engine advertisements found in the wild– an attack method known as SEO Poisoning, which can be considered a type of malvertising (malicious advertising). Industry colleagues have also observed this activity, as noted by vx-underground this week.…
This post is also available in: 日本語 (Japanese)
Executive SummaryPlayful Taurus, also known as APT15, BackdoorDiplomacy, Vixen Panda, KeChang and NICKEL, is a Chinese advanced persistent threat group that routinely conducts cyber espionage campaigns. The group has been active since at least 2010 and has historically targeted government and diplomatic entities across North and South America, Africa and the Middle East.…
Adversaries don’t work 9-5 and neither do we. At eSentire, our 24/7 SOCs are staffed with Elite Threat Hunters and Cyber Analysts who hunt, investigate, contain and respond to threats within minutes.
We have discovered some of the most dangerous threats and nation state attacks in our space – including the Kaseya MSP breach and the more_eggs malware.…