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Category — BIOS
Fruity Trojan Uses Deceptive Software Installers to Spread Remcos RAT

Fruity Trojan Uses Deceptive Software Installers to Spread Remcos RAT

Jul 31, 2023 Malware / Cyber Threat
Threat actors are creating fake websites hosting trojanized software installers to trick unsuspecting users into downloading a downloader malware called Fruity with the goal of installing remote trojans tools like Remcos RAT. "Among the software in question are various instruments for fine-tuning CPUs, graphic cards, and BIOS; PC hardware-monitoring tools; and some other apps," cybersecurity vendor Doctor Web  said  in an analysis.  "Such installers are used as a decoy and contain not only the software potential victims are interested in, but also the trojan itself with all its components." The exact initial access vector used in the campaign is unclear but it could potentially range from phishing to drive-by downloads to malicious ads. Users who land on the fake site are prompted to download a ZIP installer package. The installer, besides activating the standard installation process, stealthily drops the Fruity trojan, a Python-based malware that unpacks an MP...
Qualcomm Chipsets and Lenovo BIOS Get Security Updates to Fix Multiple Flaws

Qualcomm Chipsets and Lenovo BIOS Get Security Updates to Fix Multiple Flaws

Jan 04, 2023 Firmware Security
Qualcomm on Tuesday  released patches  to address multiple security flaws in its chipsets, some of which could be exploited to cause information disclosure and memory corruption. The five vulnerabilities -- tracked from CVE-2022-40516 through CVE-2022-40520 -- also impact Lenovo ThinkPad X13s laptops, prompting the Chinese PC maker to issue BIOS updates to plug the security holes. The list of flaws is as follows - CVE-2022-40516, CVE-2022-40517 & CVE-2022-40520  (CVSS scores: 8.4) - Memory corruption in Core due to  stack-based buffer overflow CVE-2022-40518 & CVE-2022-40519  (CVSS scores: 6.8) - Information disclosure due to  buffer over-read  in Core Stack-based buffer overflow vulnerabilities can result in severe impacts, such as data corruption, system crashes, and arbitrary code execution. Buffer over-reads, on the other hand, can be weaponized to read out-of-bounds memory, leading to the exposure of secret data. Successful explo...
Want to Grow Vulnerability Management into Exposure Management? Start Here!

Want to Grow Vulnerability Management into Exposure Management? Start Here!

Dec 05, 2024Attack Surface / Exposure Management
Vulnerability Management (VM) has long been a cornerstone of organizational cybersecurity. Nearly as old as the discipline of cybersecurity itself, it aims to help organizations identify and address potential security issues before they become serious problems. Yet, in recent years, the limitations of this approach have become increasingly evident.  At its core, Vulnerability Management processes remain essential for identifying and addressing weaknesses. But as time marches on and attack avenues evolve, this approach is beginning to show its age. In a recent report, How to Grow Vulnerability Management into Exposure Management (Gartner, How to Grow Vulnerability Management Into Exposure Management, 8 November 2024, Mitchell Schneider Et Al.), we believe Gartner® addresses this point precisely and demonstrates how organizations can – and must – shift from a vulnerability-centric strategy to a broader Exposure Management (EM) framework. We feel it's more than a worthwhile read an...
New Flaw in Acer Laptops Could Let Attackers Disable Secure Boot Protection

New Flaw in Acer Laptops Could Let Attackers Disable Secure Boot Protection

Nov 29, 2022
Acer has released a firmware update to address a security vulnerability that could be potentially weaponized to turn off UEFI Secure Boot on affected machines. Tracked as  CVE-2022-4020 , the high-severity vulnerability affects five different models that consist of Aspire A315-22, A115-21, and A315-22G, and Extensa EX215-21 and EX215-21G. The PC maker described the vulnerability as an issue that "may allow changes to Secure Boot settings by creating NVRAM variables." Credited with  discovering  the flaw is ESET researcher Martin Smolár, who previously disclosed  similar bugs  in Lenovo computers. Disabling Secure Boot, an integrity mechanism that guarantees that only trusted software is loaded during system startup, enables a malicious actor to tamper with  boot loaders , leading to severe consequences. This includes  granting  the attacker complete control over the operating system loading process as well as "disable or bypass protections t...
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New UEFI Firmware Flaws Reported in Several Lenovo Notebook Models

New UEFI Firmware Flaws Reported in Several Lenovo Notebook Models

Nov 10, 2022
PC maker Lenovo has addressed yet another set of three shortcomings in the Unified Extensible Firmware Interface (UEFI) firmware affecting several Yoga, IdeaPad, and ThinkBook devices. "The vulnerabilities allow disabling UEFI Secure Boot or restoring factory default Secure Boot databases (incl. dbx): all simply from an OS," Slovak cybersecurity firm ESET  explained  in a series of tweets. UEFI refers to software that acts as an interface between the operating system and the firmware embedded in the device's hardware. Because UEFI is  responsible  for launching the operating system when a device is powered on, it has made the technology an attractive option for threat actors looking to  drop malware  that's difficult to detect and remove. Viewed in that light, the flaws, tracked as CVE-2022-3430, CVE-2022-3431, and CVE-2022-3432, could be abused by an adversary to turn off Secure Boot, a security mechanism that's designed to prevent malicious programs ...
New Dell BIOS Bugs Affect Millions of Inspiron, Vostro, XPS, Alienware Systems

New Dell BIOS Bugs Affect Millions of Inspiron, Vostro, XPS, Alienware Systems

Mar 22, 2022
Five new security weaknesses have been disclosed in Dell BIOS that, if successfully exploited, could lead to code execution on vulnerable systems, joining the likes of firmware vulnerabilities recently uncovered in Insyde Software's  InsydeH2O  and HP Unified Extensible Firmware Interface ( UEFI ). Tracked as CVE-2022-24415, CVE-2022-24416, CVE-2022-24419, CVE-2022-24420, and CVE-2022-24421, the high-severity vulnerabilities are rated 8.2 out of 10 on the CVSS scoring system. "The active exploitation of all the discovered vulnerabilities can't be detected by firmware integrity monitoring systems due to limitations of the Trusted Platform Module (TPM) measurement," firmware security company Binarly, which discovered the latter three flaws,  said  in a write-up. "The remote device health attestation solutions will not detect the affected systems due to the design limitations in visibility of the firmware runtime." All the flaws relate to improper input v...
BIOS Disconnect: New High-Severity Bugs Affect 128 Dell PC and Tablet Models

BIOS Disconnect: New High-Severity Bugs Affect 128 Dell PC and Tablet Models

Jun 24, 2021
Cybersecurity researchers on Thursday disclosed a chain of vulnerabilities affecting the BIOSConnect feature within Dell Client BIOS that could be abused by a privileged network adversary to gain arbitrary code execution at the BIOS/UEFI level of the affected device. "As the attacker has the ability to remotely execute code in the pre-boot environment, this can be used to subvert the operating system and undermine fundamental trust in the device," researchers from enterprise device security firm Eclypsium said . "The virtually unlimited control over a device that this attack can provide makes the fruit of the labor well worth it for the attacker." In all, the flaws affect 128 Dell models spanning across consumer and business laptops, desktops, and tablets, totalling an estimated 30 million individual devices. Worse, the weaknesses also impact computers that have  Secure Boot  enabled, a security feature designed to prevent  rootkits from being installed  at boot...
TrickBot Malware Gets UEFI/BIOS Bootkit Feature to Remain Undetected

TrickBot Malware Gets UEFI/BIOS Bootkit Feature to Remain Undetected

Dec 03, 2020
TrickBot , one of the most notorious and adaptable malware botnets in the world, is expanding its toolset to set its sights on firmware vulnerabilities to potentially deploy bootkits and take complete control of an infected system. The new functionality, dubbed " TrickBoot " by Advanced Intelligence (AdvIntel) and Eclypsium, makes use of readily available tools to check devices for well-known vulnerabilities that can allow attackers to inject malicious code in the UEFI/BIOS firmware of a device, granting the attackers an effective mechanism of persistent malware storage. "This marks a significant step in the evolution of TrickBot as UEFI level implants are the deepest, most powerful, and stealthy form of bootkits," the researchers said. "By adding the ability to canvas victim devices for specific UEFI/BIOS firmware vulnerabilities, TrickBot actors are able to target specific victims with firmware-level persistence that survives re-imaging or even device br...
New 'MosaicRegressor' UEFI Bootkit Malware Found Active in the Wild

New 'MosaicRegressor' UEFI Bootkit Malware Found Active in the Wild

Oct 06, 2020
Cybersecurity researchers have spotted a rare kind of potentially dangerous malware that targets a machine's booting process to drop persistent malware. The campaign involved the use of a compromised  UEFI  (or Unified Extensible Firmware Interface) containing a malicious implant, making it the  second known public case  where a UEFI rootkit has been used in the wild. According to  Kaspersky , the rogue UEFI firmware images were modified to incorporate several malicious modules, which were then used to drop malware on victim machines in a series of targeted cyberattacks directed against diplomats and members of an NGO from Africa, Asia, and Europe. Calling the malware framework " MosaicRegressor ," Kaspersky researchers Mark Lechtik, Igor Kuznetsov, and Yury Parshin said a telemetry analysis revealed several dozen victims between 2017 and 2019, all of whom had some ties to North Korea. UEFI is a firmware interface and a replacement for BIOS that improves s...
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