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Malware analysis encompasses a broad range of activities, including examining the malware's network traffic. To be effective at it, it's crucial to understand the common challenges and how to overcome them. Here are three prevalent issues you may encounter and the tools you'll need to address them. Decrypting HTTPS traffic Hypertext Transfer Protocol Secure (HTTPS), the protocol for secure online communication, has become a tool for malware to conceal their malicious activities. By cloaking data exchange between infected devices and command-and-control (C&C) servers, malware can operate undetected, exfiltrating sensitive data, installing additional payloads, and receiving instructions from the operators. Yet, with the right tool, decrypting HTTPS traffic is an easy task. For this purpose, we can use a man-in-the-middle (MITM) proxy. The MITM proxy works as an intermediary between the client and the server, intercepting their communication. The MITM proxy aids analy...

Microsoft has warned that adversaries are using OAuth applications as an automation tool to deploy virtual machines (VMs) for cryptocurrency mining and launch phishing attacks. "Threat actors compromise user accounts to create, modify, and grant high privileges to OAuth applications that they can misuse to hide malicious activity," the Microsoft Threat Intelligence team  said  in an analysis. "The misuse of OAuth also enables threat actors to maintain access to applications even if they lose access to the initially compromised account." OAuth , short for Open Authorization, is an  authorization and delegation framework  (as opposed to authentication) that provides applications the ability to securely access information from other websites without handing over passwords. In the attacks detailed by Microsoft, threat actors have been observed launching phishing or password-spraying attacks against poorly secured accounts with permissions to create or modify OAuth...

Ukraine's biggest telecom operator Kyivstar has  become  the victim of a " powerful hacker attack ," disrupting customer access to mobile and internet services. "The cyberattack on Ukraine's #Kyivstar telecoms operator has impacted all regions of the country with high impact to the capital, metrics show, with knock-on impacts reported to air raid alert network and banking sector as work continues to restore connectivity," NetBlocks  said  in a series of posts on X (formerly Twitter). Kyivstar, which is owned by Dutch-domiciled multinational telecommunication services company VEON,  serves  nearly 25 million mobile subscribers and more than 1 million home internet customers. The company said the attack was "a result of" the war with Russia and that it has notified law enforcement and special state services. While Kyivstar is working to restore the services, the internet watchdog noted that the telco is largely offline. That said, Kyivstar has yet ...

Microsoft released its final set of Patch Tuesday updates for 2023, closing out 34 flaws in its software, making it one of the lightest releases in recent years. Of the 34 shortcomings, four are rated Critical and 30 are rated Important in severity. The fixes are in addition to  18 flaws  Microsoft addressed in its Chromium-based Edge browser since the release of  Patch Tuesday updates for November 2023 . According to data from the  Zero Day Initiative , the software giant has patched more than 900 flaws this year, making it one of the busiest years for Microsoft patches. For comparison, Redmond resolved 917 CVEs in 2022. While none of the vulnerabilities are listed as publicly known or under active attack at the time of release, some of the notable ones are listed below - CVE-2023-35628  (CVSS score: 8.1) - Windows MSHTML Platform Remote Code Execution Vulnerability CVE-2023-35630  (CVSS score: 8.8) - Internet Connection Sharing (ICS) Remote Code E...

Let's begin with a thought-provoking question: among a credit card number, a social security number, and an Electronic Health Record (EHR),  which commands the highest price on a dark web forum?   Surprisingly, it's the EHR, and the difference is stark: according to a  study , EHRs can sell for up to $1,000 each, compared to a mere $5 for a credit card number and $1 for a social security number. The reason is simple: while a credit card can be canceled, your personal data can't. This significant value disparity underscores why the healthcare industry remains a prime target for cybercriminals. The sector's rich repository of sensitive data presents a lucrative opportunity for profit-driven attackers. For 12 years running, healthcare has faced the highest average costs per breach compared to any other sector.  Exceeding an average of $10 million per breach , it surpasses even the financial sector, which incurs an average cost of around $6 million. The severity of t...

The Russian nation-state threat actor known as  APT28  has been observed making use of lures related to the ongoing Israel-Hamas war to facilitate the delivery of a custom backdoor called HeadLace. IBM X-Force is tracking the adversary under the name ITG05, which is also known as BlueDelta, Fancy Bear, Forest Blizzard (formerly Strontium), FROZENLAKE, Iron Twilight, Sednit, Sofacy, and TA422. "The newly discovered campaign is directed against targets based in at least 13 nations worldwide and leverages authentic documents created by academic, finance and diplomatic centers," security researchers Golo Mühr, Claire Zaboeva, and Joe Fasulo  said . "ITG05's infrastructure ensures only targets from a single specific country can receive the malware, indicating the highly targeted nature of the campaign." Targets of the campaign include Hungary, Türkiye, Australia, Poland, Belgium, Ukraine, Germany, Azerbaijan, Saudi Arabia, Kazakhstan, Italy, Latvia, and Romania...

2023 has seen its fair share of cyber attacks, however there's one attack vector that proves to be more prominent than others - non-human access. With  11 high-profile attacks in 13 months  and an ever-growing ungoverned attack surface, non-human identities are the new perimeter, and 2023 is only the beginning.  Why non-human access is a cybercriminal's paradise  People always look for the easiest way to get what they want, and this goes for cybercrime as well. Threat actors look for the path of least resistance, and it seems that in 2023 this path was non-user access credentials (API keys, tokens, service accounts and secrets).  " 50% of the active access tokens connecting Salesforce and third-party apps are unused. In GitHub and GCP the numbers reach 33%." These non-user access credentials are used to connect apps and resources to other cloud services. What makes them a true hacker's dream is that they have no security measures like user credentials do (M...

A phishing campaign has been observed delivering an information stealer malware called  MrAnon Stealer  to unsuspecting victims via seemingly benign booking-themed PDF lures. "This malware is a Python-based information stealer compressed with cx-Freeze to evade detection," Fortinet FortiGuard Labs researcher Cara Lin  said . "MrAnon Stealer steals its victims' credentials, system information, browser sessions, and cryptocurrency extensions." There is evidence to suggest that Germany is the primary target of the attack as of November 2023, owing to the number of times the downloader URL hosting the payload has been queried. Masquerading as a company looking to book hotel rooms, the phishing email bears a PDF file that, upon opening, activates the infection by prompting the recipient to download an updated version of Adobe Flash. Doing so results in the execution of .NET executables and PowerShell scripts to ultimately run a pernicious Python script, which i...

Apple on Monday released  security patches  for iOS, iPadOS, macOS, tvOS, watchOS, and Safari web browser to address multiple security flaws, in addition to backporting fixes for two recently disclosed zero-days to older devices. This includes updates for  12 security vulnerabilities  in iOS and iPadOS spanning AVEVideoEncoder, ExtensionKit, Find My, ImageIO, Kernel, Safari Private Browsing, and WebKit.  macOS Sonoma 14.2 , for its part, resolves 39 shortcomings, counting six bugs impacting the  ncurses library . Notable among the flaws is  CVE-2023-45866 , a critical security issue in Bluetooth that could allow an attacker in a privileged network position to inject keystrokes by spoofing a keyboard. The vulnerability was disclosed by SkySafe security researcher Marc Newlin last week. It has been remediated in iOS 17.2, iPadOS 17.2, and macOS Sonoma 14.2 with improved checks, the iPhone maker said. Also released by Apple is  Safari 17.2 , co...

Apache has released a security advisory warning of a critical security flaw in the Struts 2 open-source web application framework that could result in remote code execution. Tracked as  CVE-2023-50164 , the vulnerability is  rooted  in a flawed "file upload logic" that could enable unauthorized path traversal and could be exploited under the circumstances to upload a malicious file and achieve execution of arbitrary code. Struts is a Java framework that uses the Model-View-Controller ( MVC ) architecture for building enterprise-oriented web applications. Steven Seeley of Source Incite has been credited with discovering and reporting the flaw, which impacts the following versions of the software - Struts 2.3.37 (EOL) Struts 2.5.0 - Struts 2.5.32, and Struts 6.0.0 - Struts 6.3.0 Patches for the bug are available in versions 2.5.33 and 6.3.0.2 or greater. There are no workarounds that remediate the issue. "All developers are strongly advised to perform this upgr...