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GTPDOOR Linux Malware Targets Telecoms, Exploiting GPRS Roaming Networks

GTPDOOR Linux Malware Targets Telecoms, Exploiting GPRS Roaming Networks

Feb 29, 2024 Linux / Network Security
Threat hunters have discovered a new Linux malware called  GTPDOOR  that's designed to be deployed in telecom networks that are adjacent to GPRS roaming exchanges ( GRX ) The  malware  is novel in the fact that it leverages the GPRS Tunnelling Protocol ( GTP ) for command-and-control (C2) communications. GPRS roaming allows subscribers to access their GPRS services while they are beyond the reach of their home mobile network. This is facilitated by means of a GRX that transports the roaming traffic using GTP between the visited and the home Public Land Mobile Network ( PLMN ). Security researcher haxrob, who discovered two  GTPDOOR   artifacts  uploaded to VirusTotal from China and Italy, said the backdoor is likely linked to a known threat actor tracked as  LightBasin  (aka UNC1945), which was previously disclosed by CrowdStrike in October 2021 in connection with a series of attacks targeting the telecom sector to steal subscriber information and call metadata. "When run, the f
How to Prioritize Cybersecurity Spending: A Risk-Based Strategy for the Highest ROI

How to Prioritize Cybersecurity Spending: A Risk-Based Strategy for the Highest ROI

Feb 29, 2024 Attack Surface / Incident Response
As an IT leader, staying on top of the latest cybersecurity developments is essential to keeping your organization safe. But with threats coming from all around — and hackers dreaming up new exploits every day — how do you create proactive, agile cybersecurity strategies? And what cybersecurity approach gives you the most bang for your buck, mitigating your risks and maximizing the value of your cybersecurity investments? Let's take a closer look at the trends that are impacting organizations today, including the growing reach of data breaches and the increase in cybersecurity spending, and explore how you can get the most out of your cybersecurity resources, effectively securing your digital assets and maintaining your organization's integrity in the face of ever-evolving cyber threats. Successful data breaches In 2022, the number of people affected by data breaches increased significantly. According to the  Identity Theft Resource Center's 2022 Data Breach Report , more than 1,80
Lazarus Hackers Exploited Windows Kernel Flaw as Zero-Day in Recent Attacks

Lazarus Hackers Exploited Windows Kernel Flaw as Zero-Day in Recent Attacks

Feb 29, 2024 Rootkit / Threat Intelligence
The notorious Lazarus Group actors exploited a recently patched privilege escalation flaw in the Windows Kernel as a zero-day to obtain kernel-level access and disable security software on compromised hosts. The vulnerability in question is  CVE-2024-21338  (CVSS score: 7.8), which can permit an attacker to gain SYSTEM privileges. It was resolved by Microsoft earlier this month as part of  Patch Tuesday updates . "To exploit this vulnerability, an attacker would first have to log on to the system," Microsoft  said . "An attacker could then run a specially crafted application that could exploit the vulnerability and take control of an affected system." While there were no indications of active exploitation of CVE-2024-21338 at the time of the release of the updates, Redmond on Wednesday revised its "Exploitability assessment" for the flaw to "Exploitation Detected."  Cybersecurity vendor Avast, which  discovered  an in-the-wild admin-to-kern
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Are You Vulnerable to Third-Party Breaches Through Interconnected SaaS Apps?

websiteWing SecuritySaaS Security / Risk Management
Protect against cascading risks by identifying and mitigating app2app and third-party SaaS vulnerabilities.
New Backdoor Targeting European Officials Linked to Indian Diplomatic Events

New Backdoor Targeting European Officials Linked to Indian Diplomatic Events

Feb 29, 2024 Cyber Espionage / Malware
A previously undocumented threat actor dubbed  SPIKEDWINE  has been observed targeting officials in European countries with Indian diplomatic missions using a new backdoor called WINELOADER . The adversary, according to a  report  from Zscaler ThreatLabz, used a PDF file in emails that purported to come from the Ambassador of India, inviting diplomatic staff to a wine-tasting event on February 2, 2024. The  PDF document  was uploaded to VirusTotal from Latvia on January 30, 2024. That said, there is evidence to suggest that this campaign may have been active at least since July 6, 2023, going by the discovery of  another similar PDF file  uploaded from the same country. "The attack is characterized by its very low volume and the advanced tactics, techniques, and procedures (TTPs) employed in the malware and command-and-control (C2) infrastructure," security researchers Sudeep Singh and Roy Tay said. Central to the novel attack is the PDF file that comes embedded with a malicious
Lazarus Exploits Typos to Sneak PyPI Malware into Dev Systems

Lazarus Exploits Typos to Sneak PyPI Malware into Dev Systems

Feb 29, 2024 Malware / Endpoint Security
The notorious North Korean state-backed hacking group Lazarus uploaded four packages to the Python Package Index (PyPI) repository with the goal of infecting developer systems with malware. The packages, now taken down, are  pycryptoenv ,  pycryptoconf ,  quasarlib , and  swapmempool . They have been collectively downloaded 3,269 times, with pycryptoconf accounting for the most downloads at 1,351. "The package names pycryptoenv and pycryptoconf are similar to pycrypto, which is a Python package used for encryption algorithms in Python," JPCERT/CC researcher Shusei Tomonaga  said . "Therefore, the attacker probably prepared the malware-containing malicious packages to target users' typos in installing Python packages." The disclosure comes days after Phylum  uncovered  several rogue packages on the npm registry that have been used to single out software developers as part of a campaign codenamed Contagious Interview. An interesting commonality between the t
Chinese Hackers Exploiting Ivanti VPN Flaws to Deploy New Malware

Chinese Hackers Exploiting Ivanti VPN Flaws to Deploy New Malware

Feb 29, 2024 Threat intelligence / Vulnerability
At least two different suspected China-linked cyber espionage clusters, tracked as  UNC5325  and  UNC3886 , have been attributed to the exploitation of security flaws in Ivanti Connect Secure VPN appliances. UNC5325 abused  CVE-2024-21893  to deliver a wide range of new malware called LITTLELAMB.WOOLTEA, PITSTOP, PITDOG, PITJET, and PITHOOK, as well as attempted to maintain persistent access to compromised appliances, Mandiant said. The Google-owned threat intelligence firm has assessed with moderate confidence that UNC5325 is associated with UNC3886 owing to source code overlaps in LITTLELAMB.WOOLTEA and PITHOOK with malware used by the latter. It's worth pointing out that  UNC3886  has a track record of leveraging zero-day flaws in Fortinet and VMware solutions to deploy a variety of implants like VIRTUALPITA, VIRTUALPIE, THINCRUST, and CASTLETAP. "UNC3886 has primarily targeted the defense industrial base, technology, and telecommunication organizations located in the U.S. and
SaaS Compliance through the NIST Cybersecurity Framework

SaaS Compliance through the NIST Cybersecurity Framework

Feb 20, 2024Cybersecurity Framework / SaaS Security
The US National Institute of Standards and Technology (NIST) cybersecurity framework is one of the world's most important guidelines for securing networks. It can be applied to any number of applications, including SaaS.  One of the challenges facing those tasked with securing SaaS applications is the different settings found in each application. It makes it difficult to develop a configuration policy that will apply to an HR app that manages employees, a marketing app that manages content, and an R&D app that manages software versions, all while aligning with NIST compliance standards.  However, there are several settings that can be applied to nearly every app in the SaaS stack. In this article, we'll explore some universal configurations, explain why they are important, and guide you in setting them in a way that improves your SaaS apps' security posture.  Start with Admins Role-based access control (RBAC) is a key to NIST adherence and should be applied to every SaaS a
President Biden Blocks Mass Transfer of Personal Data to High-Risk Nations

President Biden Blocks Mass Transfer of Personal Data to High-Risk Nations

Feb 29, 2024 Cyber Espionage / Data Protection
U.S. President Joe Biden has  issued  an Executive Order that prohibits the mass transfer of citizens' personal data to countries of concern. The Executive Order also "provides safeguards around other activities that can give those countries access to Americans' sensitive data," the White House said in a statement. This includes sensitive information such as genomic data, biometric data, personal health data, geolocation data, financial data, and certain kinds of personally identifiable information (PII). The U.S. government said threat actors could weaponize this information to track their citizens and pass that information to  data brokers  and foreign intelligence services, which can then be used for intrusive surveillance, scams, blackmail, and other violations of privacy. "Commercial data brokers and other companies can sell this data to countries of concern, or entities controlled by those countries, and it can land in the hands of foreign intelligenc
Iran-Linked UNC1549 Hackers Target Middle East Aerospace & Defense Sectors

Iran-Linked UNC1549 Hackers Target Middle East Aerospace & Defense Sectors

Feb 28, 2024 Cyber Espionage / Malware
An Iran-nexus threat actor known as  UNC1549  has been attributed with medium confidence to a new set of attacks targeting aerospace, aviation, and defense industries in the Middle East, including Israel and the U.A.E. Other targets of the cyber espionage activity likely include Turkey, India, and Albania, Google-owned Mandiant said in a new analysis. UNC1549 is said to overlap with  Smoke Sandstorm  (previously Bohrium) and  Crimson Sandstorm  (previously Curium), the latter of which is an Islamic Revolutionary Guard Corps (IRGC) affiliated group also known as Imperial Kitten, TA456, Tortoiseshell, and Yellow Liderc. "This suspected UNC1549 activity has been active since at least June 2022 and is still ongoing as of February 2024," the company  said . "While regional in nature and focused mostly in the Middle East, the targeting includes entities operating worldwide." The attacks entail the use of Microsoft Azure cloud infrastructure for command-and-control (C2) and social engin
FBI Warns U.S. Healthcare Sector of Targeted BlackCat Ransomware Attacks

FBI Warns U.S. Healthcare Sector of Targeted BlackCat Ransomware Attacks

Feb 28, 2024 Ransomware / Healthcare
The U.S. government is warning about the resurgence of BlackCat (aka ALPHV) ransomware attacks targeting the healthcare sector as recently as this month. "Since mid-December 2023, of the nearly 70 leaked victims, the healthcare sector has been the most commonly victimized," the government  said  in an updated advisory. "This is likely in response to the ALPHV/BlackCat administrator's post encouraging its affiliates to target hospitals after operational action against the group and its infrastructure in early December 2023." The alert comes courtesy of the Federal Bureau of Investigation (FBI), the Cybersecurity and Infrastructure Security Agency (CISA), and the Department of Health and Human Services (HHS). The BlackCat ransomware operation suffered a major blow late last year after a coordinated law enforcement operation led to the  seizure of its dark leak sites . But the takedown turned out to be a failure after the group managed to regain control of the
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