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CISA Warns of Actively Exploited Apache Flink Security Vulnerability

CISA Warns of Actively Exploited Apache Flink Security Vulnerability

May 23, 2024 Threat Intelligence / Vulnerability,
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Thursday  added  a security flaw impacting Apache Flink, the open-source, unified stream-processing and batch-processing framework, to the Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation. Tracked as  CVE-2020-17519 , the issue relates to a case of improper access control that could allow an attacker to read any file on the local filesystem of the JobManager through its REST interface. This also means that a remote unauthenticated attacker could send a specially crafted directory traversal request that could permit unauthorized access to sensitive information. The vulnerability, which impacts Flink versions 1.11.0, 1.11.1, and 1.11.2, was  addressed  in January 2021 in versions 1.11.3 or 1.12.0. The exact nature of the attacks exploiting the flaw is presently unknown, although Palo Alto Networks Unit 42 warned of extensive in-the-wild abuse between November 2020 and January
Inside Operation Diplomatic Specter: Chinese APT Group's Stealthy Tactics Exposed

Inside Operation Diplomatic Specter: Chinese APT Group's Stealthy Tactics Exposed

May 23, 2024 Cyber Espionage / Network Security
Governmental entities in the Middle East, Africa, and Asia are the target of a Chinese advanced persistent threat (APT) group as part of an ongoing cyber espionage campaign dubbed  Operation Diplomatic Specter  since at least late 2022. "An analysis of this threat actor's activity reveals long-term espionage operations against at least seven governmental entities," Palo Alto Networks Unit 42 researchers Lior Rochberger and Daniel Frank  said  in a report shared with The Hacker News. "The threat actor performed intelligence collection efforts at a large scale, leveraging rare email exfiltration techniques against compromised servers." The cybersecurity firm, which previously tracked the activity cluster under the name CL-STA-0043, said it's graduating it to a temporary actor group codenamed TGR-STA-0043 owing to its assessment that the intrusion set is the work of a single actor operating on behalf of Chinese state-aligned interests. Targets of the attacks i
Researchers Warn of Chinese-Aligned Hackers Targeting South China Sea Countries

Researchers Warn of Chinese-Aligned Hackers Targeting South China Sea Countries

May 22, 2024 Cyber Espionage / Malware
Cybersecurity researchers have disclosed details of a previously undocumented threat group called  Unfading Sea Haze  that's believed to have been active since 2018. The intrusion singled out high-level organizations in South China Sea countries, particularly military and government targets, Bitdefender said in a report shared with The Hacker News. "The investigation revealed a troubling trend beyond the historical context," Martin Zugec, technical solutions director at Bitdefender,  said , adding it identified a total of eight victims to date. "Notably, the attackers repeatedly regained access to compromised systems. This exploitation highlights a critical vulnerability: poor credential hygiene and inadequate patching practices on exposed devices and web services." There are some indications that the threat actor behind the attacks is operating with goals that are aligned with Chinese interests despite the fact that the attack signatures do not overlap wit
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SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

May 13, 2024Threat Detection / SoC / SIEM
In the last decade, there has been a growing disconnect between front-line analysts and senior management in IT and Cybersecurity. Well-documented challenges facing modern analysts revolve around a high volume of alerts, false positives, poor visibility of technical environments, and analysts spending too much time on manual tasks. The Impact of Alert Fatigue and False Positives  Analysts are overwhelmed with alerts. The knock-on effect of this is that fatigued analysts are at risk of missing key details in incidents, and often conduct time-consuming triaging tasks manually only to end up copying and pasting a generic closing comment into a false positive alert.  It is likely that there will always be false positives. And many would argue that a false positive is better than a false negative. But for proactive actions to be made, we must move closer to the heart of an incident. That requires diving into how analysts conduct the triage and investigation process. SHQ Response Platfo
NextGen Healthcare Mirth Connect Under Attack - CISA Issues Urgent Warning

NextGen Healthcare Mirth Connect Under Attack - CISA Issues Urgent Warning

May 21, 2024 Healthcare / Vulnerability
The U.S. Cybersecurity and Infrastructure Security Agency (CISA) on Monday  added  a security flaw impacting NextGen Healthcare Mirth Connect to its Known Exploited Vulnerabilities ( KEV ) catalog, citing evidence of active exploitation. The flaw, tracked as  CVE-2023-43208  (CVSS score: N/A), concerns a case of unauthenticated remote code execution arising from an incomplete patch for another critical flaw CVE-2023-37679 (CVSS score: 9.8). Details of the vulnerability were first revealed by Horizon3.ai in late October 2023, with additional technical specifics and a proof-of-concept (PoC) exploit released earlier this January. Mirth Connect is an open-source data integration platform widely used by healthcare companies, allowing for data exchange between different systems in a standardized manner. CVE-2023-43208 is "ultimately related to insecure usage of the Java XStream library for unmarshalling XML payloads," security researcher Naveen Sunkavally  said , describing t
Iranian MOIS-Linked Hackers Behind Destructive Attacks on Albania and Israel

Iranian MOIS-Linked Hackers Behind Destructive Attacks on Albania and Israel

May 20, 2024 Cyber Attack / Threat Intelligence
An Iranian threat actor affiliated with the Ministry of Intelligence and Security (MOIS) has been attributed as behind destructive wiping attacks targeting Albania and Israel under the personas Homeland Justice and Karma, respectively. Cybersecurity firm Check Point is tracking the activity under the moniker  Void Manticore , which is also referred to as  Storm-0842  (formerly DEV-0842) by Microsoft. "There are clear overlaps between the targets of Void Manticore and  Scarred Manticore , with indications of systematic hand off of targets between those two groups when deciding to conduct destructive activities against existing victims of Scarred Manticore," the company  said  in a report published today. The threat actor is known for its disruptive cyber attacks against Albania since July 2022 under the name Homeland Justice that involve the use of bespoke wiper malware called  Cl Wiper  and  No-Justice  (aka LowEraser). Similar wiper malware attacks have also targeted Wi
North Korean Hackers Exploit Facebook Messenger in Targeted Malware Campaign

North Korean Hackers Exploit Facebook Messenger in Targeted Malware Campaign

May 16, 2024 Malware / Cyber Espionage
The North Korea-linked  Kimsuky hacking group  has been attributed to a new social engineering attack that employs fictitious Facebook accounts to targets via Messenger and ultimately delivers malware. "The threat actor created a Facebook account with a fake identity disguised as a public official working in the North Korean human rights field," South Korean cybersecurity company Genians  said  in a report published last week. The multi-stage attack campaign, which impersonates a legitimate individual, is designed to target activists in the North Korean human rights and anti-North Korea sectors, it noted. The approach is a departure from the typical email-based spear-phishing strategy in that it leverages the social media platform to approach targets through Facebook Messenger and trick them into opening seemingly private documents written by the persona. The decoy documents, hosted on OneDrive, is a Microsoft Common Console document that masquerades as an essay or cont
Turla Group Deploys LunarWeb and LunarMail Backdoors in Diplomatic Missions

Turla Group Deploys LunarWeb and LunarMail Backdoors in Diplomatic Missions

May 15, 2024 Cyber Espionage / Threat Intelligence
An unnamed European Ministry of Foreign Affairs (MFA) and its three diplomatic missions in the Middle East were targeted by two previously undocumented backdoors tracked as LunarWeb and LunarMail. ESET, which identified the activity, attributed it with medium confidence to the Russia-aligned cyberespionage group Turla (aka Iron Hunter, Pensive Ursa, Secret Blizzard, Snake, Uroburos, and Venomous Bear), citing tactical overlaps with prior campaigns identified as orchestrated by the threat actor. "LunarWeb, deployed on servers, uses HTTP(S) for its C&C [command-and-control] communications and mimics legitimate requests, while LunarMail, deployed on workstations, is persisted as an Outlook add-in and uses email messages for its C&C communications," security researcher Filip JurĨacko  said . An analysis of the Lunar artifacts shows that they may have been used in targeted attacks since early 2020, or even earlier. Turla, assessed to be affiliated with Russia's Fe
Microsoft Patches 61 Flaws, Including Two Actively Exploited Zero-Days

Microsoft Patches 61 Flaws, Including Two Actively Exploited Zero-Days

May 15, 2024 Patch Tuesday / Vulnerability
Microsoft has addressed a total of  61 new security flaws  in its software as part of its Patch Tuesday updates for May 2024, including two zero-days which have been actively exploited in the wild. Of the 61 flaws, one is rated Critical, 59 are rated Important, and one is rated Moderate in severity. This is in addition to  30 vulnerabilities  resolved in the Chromium-based Edge browser over the past month, including two recently disclosed zero-days ( CVE-2024-4671  and  CVE-2024-4761 ) that have been tagged as exploited in attacks. The two security shortcomings that have been weaponized in the wild are below - CVE-2024-30040  (CVSS score: 8.8) - Windows MSHTML Platform Security Feature Bypass Vulnerability CVE-2024-30051  (CVSS score: 7.8) - Windows Desktop Window Manager ( DWM ) Core Library Elevation of Privilege Vulnerability "An unauthenticated attacker who successfully exploited this vulnerability could gain code execution through convincing a user to open a malicious
SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

SHQ Response Platform and Risk Centre to Enable Management and Analysts Alike

May 13, 2024 Threat Detection / SoC / SIEM
In the last decade, there has been a growing disconnect between front-line analysts and senior management in IT and Cybersecurity. Well-documented challenges facing modern analysts revolve around a high volume of alerts, false positives, poor visibility of technical environments, and analysts spending too much time on manual tasks. The Impact of Alert Fatigue and False Positives  Analysts are overwhelmed with alerts. The knock-on effect of this is that fatigued analysts are at risk of missing key details in incidents, and often conduct time-consuming triaging tasks manually only to end up copying and pasting a generic closing comment into a false positive alert.  It is likely that there will always be false positives. And many would argue that a false positive is better than a false negative. But for proactive actions to be made, we must move closer to the heart of an incident. That requires diving into how analysts conduct the triage and investigation process. SHQ Response Platfo
Black Basta Ransomware Strikes 500+ Entities Across North America, Europe, and Australia

Black Basta Ransomware Strikes 500+ Entities Across North America, Europe, and Australia

May 13, 2024 Ransomware / Endpoint Security
The Black Basta ransomware-as-a-service (RaaS) operation has targeted more than 500 private industry and critical infrastructure entities in North America, Europe, and Australia since its emergence in April 2022. In a joint advisory published by the Cybersecurity and Infrastructure Security Agency (CISA), the Federal Bureau of Investigation (FBI), the Department of Health and Human Services (HHS), and the Multi-State Information Sharing and Analysis Center (MS-ISAC), the agencies said the threat actors encrypted and stole data from at least 12 out of 16 critical infrastructure sectors. "Black Basta affiliates use common initial access techniques — such as phishing and exploiting known vulnerabilities — and then employ a double-extortion model, both encrypting systems and exfiltrating data," the bulletin  read . Unlike other ransomware groups, the ransom notes dropped at the end of the attack do not contain an initial ransom demand or payment instructions. Rather, the note
CensysGPT: AI-Powered Threat Hunting for Cybersecurity Pros (Webinar)

CensysGPT: AI-Powered Threat Hunting for Cybersecurity Pros (Webinar)

May 10, 2024 Artificial Intelligence / Threat Hunting
Artificial intelligence (AI) is transforming cybersecurity, and those leading the charge are using it to outsmart increasingly advanced cyber threats. Join us for an exciting webinar, " The Future of Threat Hunting is Powered by Generative AI ," where you'll explore how AI tools are shaping the future of cybersecurity defenses. During the session, Censys Security Researcher Aidan Holland will introduce you to CensysGPT, a cutting-edge tool revolutionizing threat hunting and cybersecurity research. With CensysGPT, you can ask questions in plain language, understand competitor searches, and uncover insights from network data like never before. Here's why you should attend: Discover the latest:  Learn how generative AI is changing the game in cybersecurity and threat intelligence. Hunt smarter and faster:  See how CensysGPT helps you find threats quicker, reducing your organization's risk. Strengthen your defenses:  Find out how to incorporate AI into your se
What's the Right EDR for You?

What's the Right EDR for You?

May 10, 2024 Endpoint Security / Threat Detection
A guide to finding the right endpoint detection and response (EDR) solution for your business' unique needs. Cybersecurity has become an ongoing battle between hackers and small- and mid-sized businesses. Though perimeter security measures like antivirus and firewalls have traditionally served as the frontlines of defense, the battleground has shifted to endpoints. This is why endpoint detection and response (EDR) solutions now serve as critical weapons in the fight, empowering you and your organization to detect known and unknown threats, respond to them quickly, and extend the cybersecurity fight across all phases of an attack.  With the growing need to defend your devices from today's cyber threats, however, choosing the right EDR solution can be a daunting task. There are so many options and features to choose from, and not all EDR solutions are made with everyday businesses and IT teams in mind. So how do you pick the best solution for your needs? Why EDR Is a Must Because of
Kremlin-Backed APT28 Targets Polish Institutions in Large-Scale Malware Campaign

Kremlin-Backed APT28 Targets Polish Institutions in Large-Scale Malware Campaign

May 09, 2024 Mobile Security / Cyber Attack
Polish government institutions have been targeted as part of a large-scale malware campaign orchestrated by a Russia-linked nation-state actor called  APT28 . "The campaign sent emails with content intended to arouse the recipient's interest and persuade him to click on the link," the computer emergency response team, CERT Polska,  said  in a Wednesday bulletin. Clicking on the link redirects the victim to the domain run.mocky[.]io, which, in turn, is used to redirect to another legitimate site named webhook[.]site, a  free service  that allows developers to inspect data that's being sent via a webhook, in an effort to evade detection. The next step involves the download of a ZIP archive file from webhook[.]site, which contains the Windows Calculator binary that masquerades as a JPG image file ("IMG-238279780.jpg.exe"), a hidden batch script file, and another hidden DLL file ("WindowsCodecs.dll"). Should a victim run the application, the malic
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