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CCleaner Attack Timeline—Here's How Hackers Infected 2.3 Million PCs

CCleaner Attack Timeline—Here's How Hackers Infected 2.3 Million PCs

April 18, 2018Swati Khandelwal
Last year, the popular system cleanup software CCleaner suffered a massive supply-chain malware attack of all times, wherein hackers compromised the company's servers for more than a month and replaced the original version of the software with the malicious one. The malware attack infected over 2.3 million users who downloaded or updated their CCleaner app between August and September last year from the official website with the backdoored version of the software. Now, it turns out that the hackers managed to infiltrate the company's network almost five months before they first replaced the official CCleaner build with the backdoored version, revealed Avast executive VP and CTO Ondrej Vlcek at the RSA security conference in San Francisco on Tuesday. 6-Months Timeline of CCleaner Supply Chain Attack Vlcek shared a brief timeline of the last year's incident that came out to be the worst nightmare for the company, detailing how and when unknown hackers breached Pi
Hackers Can Steal Your Passwords Just by Monitoring SmartPhone Sensors

Hackers Can Steal Your Passwords Just by Monitoring SmartPhone Sensors

April 12, 2017Swati Khandelwal
Do you know how many kinds of sensors your smartphone has inbuilt? And what data they gather about your physical and digital activities? An average smartphone these days is packed with a wide array of sensors such as GPS, Camera, microphone, accelerometer, magnetometer, proximity, gyroscope, pedometer, and NFC, to name a few. Now, according to a team of scientists from Newcastle University in the UK, hackers can potentially guess PINs and passwords – that you enter either on a bank website, app, your lock screen – to a surprising degree of accuracy by monitoring your phone's sensors, like the angle and motion of your phone while you are typing. The danger comes due to the way malicious websites and apps access most of a smartphone's internal sensors without requesting any permission to access them – doesn't matter even if you are accessing a secure website over HTTPS to enter your password. Your Phone doesn't Restrict Apps from Accessing Sensors' Data
Hacking Millions with Just an Image — Recipe: Pixels, Ads & Exploit Kit

Hacking Millions with Just an Image — Recipe: Pixels, Ads & Exploit Kit

December 07, 2016Mohit Kumar
If you have visited any popular mainstream website over the past two months, your computer may have been infected — Thanks to a new exploit kit discovered by security researchers. Researchers from antivirus provider ESET released a report on Tuesday stating that they have discovered an exploit kit, dubbed Stegano , hiding malicious code in the pixels of banner advertisements that are currently in rotation on several high profile news websites. Stegano originally dates back to 2014, but since early October this year, cyber crooks had managed to get the malicious ads displayed on a variety of unnamed reputable news websites, each with Millions of daily visitors. Stegano derived from the word Steganography , which is a technique of hiding messages and content inside a digital graphic image, making the content impossible to spot with the naked eye. In this particular malvertising campaign, operators hide malicious code inside transparent PNG image's Alpha Channel, which def
Google Announces 5 Major Security Updates for Chrome Extensions

Google Announces 5 Major Security Updates for Chrome Extensions

October 02, 2018Mohit Kumar
Google has made several new announcements for its Chrome Web Store that aims at making Chrome extensions more secure and transparent to its users. Over a couple of years, we have seen a significant rise in malicious extensions that appear to offer useful functionalities, while running hidden malicious scripts in the background without the user's knowledge. However, the best part is that Google is aware of the issues and has proactively been working to change the way its Chrome web browser handles extensions. Earlier this year, Google banned extensions using cryptocurrency mining scripts and then in June, the company also disabled inline installation of Chrome extensions completely. The company has also been using machine learning technologies to detect and block malicious extensions. To take a step further, Google announced Monday five major changes that give users more control over certain permissions, enforces security measures, as well as makes the ecosystem more t
Yet Another Android Malware Infects Over 4.2 Million Google Play Store Users

Yet Another Android Malware Infects Over 4.2 Million Google Play Store Users

September 15, 2017Swati Khandelwal
Even after so many efforts by Google, malicious apps somehow managed to fool its Play Store's anti-malware protections and infect people with malicious software. The same happened once again when at least 50 apps managed to make its way onto Google Play Store and were successfully downloaded as many as 4.2 million times—one of the biggest malware outbreaks. Security firm Check Point on Thursday published a blog post revealing at least 50 Android apps that were free to download on official Play Store and were downloaded between 1 million and 4.2 million times before Google removed them. These Android apps come with hidden malware payload that secretly registers victims for paid online services, sends fraudulent premium text messages from victims' smartphones and leaves them to pay the bill—all without the knowledge or permission of users. Dubbed ExpensiveWall by Check Point researchers because it was found in the Lovely Wallpaper app, the malware comes hidden in fre
Microsoft Warns of a New Rare Fileless Malware Hijacking Windows Computers

Microsoft Warns of a New Rare Fileless Malware Hijacking Windows Computers

September 27, 2019Swati Khandelwal
Watch out Windows users! There's a new strain of malware making rounds on the Internet that has already infected thousands of computers worldwide and most likely, your antivirus program would not be able to detect it. Why? That's because, first, it's an advanced fileless malware and second, it leverages only legitimate built-in system utilities and third-party tools to extend its functionality and compromise computers, rather than using any malicious piece of code. The technique of bringing its own legitimate tools is effective and has rarely been spotted in the wild, helping attackers to blend in their malicious activities with regular network activity or system administration tasks while leaving fewer footprints. Independently discovered by cybersecurity researchers at Microsoft and Cisco Talos, the malware — dubbed " Nodersok " and " Divergent " — is primarily being distributed via malicious online advertisements and infecting users using
Unpatched Strandhogg Android Vulnerability Actively Exploited in the Wild

Unpatched Strandhogg Android Vulnerability Actively Exploited in the Wild

December 02, 2019Swati Khandelwal
Cybersecurity researchers have discovered a new unpatched vulnerability in the Android operating system that dozens of malicious mobile apps are already exploiting in the wild to steal users' banking and other login credentials and spy on their activities. Dubbed Strandhogg , the vulnerability resides in the multitasking feature of Android that can be exploited by a malicious app installed on a device to masquerade as any other app on it, including any privileged system app. In other words, when a user taps the icon of a legitimate app, the malware exploiting the Strandhogg vulnerability can intercept and hijack this task to display a fake interface to the user instead of launching the legitimate application. By tricking users into thinking they are using a legitimate app, the vulnerability makes it possible for malicious apps to conveniently steal users' credentials using fake login screens, as shown in the video demonstration. "The vulnerability allows an attacke
WARNING — Malware Found in CamScanner Android App With 100+ Million Users

WARNING — Malware Found in CamScanner Android App With 100+ Million Users

August 27, 2019Swati Khandelwal
Beware! Attackers can remotely hijack your Android device and steal data stored on it, if you are using free version of  CamScanner , a highly-popular Phone PDF creator app with more than 100 million downloads on Google Play Store. So, to be safe, just uninstall the CamScanner app from your Android device now, as Google has already removed the app from its official Play Store. Unfortunately, CamScanner has recently gone rogue as researchers found a hidden Trojan Dropper module within the app that could allow remote attackers to secretly download and install malicious program on users' Android devices without their knowledge. However, the malicious module doesn't actually reside in the code of CamScanner Android app itself; instead, it is part of a 3rd-party advertising library that recently was introduced in the PDF creator app. Discovered by Kaspersky security researchers, the issue came to light after many CamScanner users spotted suspicious behavior and posted neg
Ongoing Attack Stealing Credit Cards From Over A Hundred Shopping Sites

Ongoing Attack Stealing Credit Cards From Over A Hundred Shopping Sites

May 08, 2019Swati Khandelwal
Researchers from Chinese cybersecurity firm Qihoo 360's NetLab have revealed details of an ongoing credit card hacking campaign that is currently stealing payment card information of customers visiting more than 105 e-commerce websites. While monitoring a malicious domain, www.magento-analytics[.]com , for over last seven months, researchers found that the attackers have been injecting malicious JS scripts hosted on this domain into hundreds of online shopping websites. The JavaScript scripts in question include the digital credit card skimming code that when execute on a site, automatically steal payment card information, such as credit card owner name, credit card number, expiration time, CVV information, entered by its customers. In an email Interview, NetLab researcher told The Hacker News that they don't have enough data to determine how hackers infected affected websites on the first place or what vulnerabilities they exploited, but did confirm that all affected
Insecure UC Browser 'Feature' Lets Hackers Hijack Android Phones Remotely

Insecure UC Browser 'Feature' Lets Hackers Hijack Android Phones Remotely

March 26, 2019Swati Khandelwal
Beware! If you are using UC Browser on your smartphones, you should consider uninstalling it immediately. Why? Because the China-made UC Browser contains a "questionable" ability that could be exploited by remote attackers to automatically download and execute code on your Android devices. Developed by Alibaba-owned UCWeb, UC Browser is one of the most popular mobile browsers, specifically in China and India, with a massive user base of more than 500 million users worldwide. According to a new report published today by Dr. Web firm, since at least 2016, UC Browser for Android has a "hidden" feature that allows the company to anytime download new libraries and modules from its servers and install them on users' mobile devices. Pushing Malicious UC Browser Plug-ins Using MiTM Attack What's worrisome? It turns out that the reported feature downloads new plugins from the company server over insecure HTTP protocol instead of encrypted HTTPS proto
Zero-Day Flaws in Counter-Strike 1.6 Let Malicious Servers Hack Gamers' PCs

Zero-Day Flaws in Counter-Strike 1.6 Let Malicious Servers Hack Gamers' PCs

March 14, 2019Mohit Kumar
If you are a Counter-Strike gamer, then beware, because 39% of all existing Counter-Strike 1.6 game servers available online are malicious that have been set-up to remotely hack gamers' computers. A team of cybersecurity researchers at Dr. Web has disclosed that an attacker has been using malicious gaming servers to silently compromise computers of Counter-Strike gamers worldwide by exploiting zero-day vulnerabilities in the game client. According to the researchers, Counter-Strike 1.6, a popular game that's almost two decades old, contains unpatched multiple remote code execution (RCE) vulnerabilities in its client software that let attackers execute arbitrary code on the gamer's computer as soon as they connect to a malicious server, without requiring any further interaction from the gamers. It turned out that a Russian gaming server developer, nicknamed 'Belonard,' has been exploiting these vulnerabilities in the wild to promote his business and create a
New Android Malware Apps Use Motion Sensor to Evade Detection

New Android Malware Apps Use Motion Sensor to Evade Detection

January 18, 2019Mohit Kumar
Even after so many efforts by Google for preventing its Play Store from malware, shady apps somehow managed to fool its anti-malware protections and get into its service to infect Android users with malware. Two such Android apps have recently been spotted on the Google Play Store by security researchers with the Trend Micro malware research team, infecting thousands of Android users who have already downloaded them with banking malware. The apps in question masquerade as a currency exchange app called Currency Converter and battery saver app called BatterySaverMobi , and are using motion-sensor inputs of infected Android devices to monitor them before installing a dangerous banking Trojan called Anubis. The malicious Android apps, with a large number of fake five-star reviews, use this clever trick instead of traditional evasion techniques in order to avoid detection when researchers run emulators (which are less likely to use sensors) to detect such malicious apps. &quo
Someone Hijacked MEGA Chrome Extension to Steal Users' Passwords

Someone Hijacked MEGA Chrome Extension to Steal Users' Passwords

September 05, 2018Swati Khandelwal
Warning! If you are using Chrome browser extension from the MEGA file storage service, uninstall it right now. The official Chrome extension for the MEGA.nz cloud storage service had been compromised and replaced with a malicious version that can steal users' credentials for popular websites like Amazon, Microsoft, Github, and Google, as well as private keys for users' cryptocurrency wallets. On 4 September at 14:30 UTC, an unknown attacker managed to hack into MEGA's Google Chrome web store account and upload a malicious version 3.39.4 of an extension to the web store, according to a blog post published by the company. Malicious MEGA Chrome Extension Steals Passwords Upon installation or auto-update, the malicious extension asked for elevated permissions to access personal information, allowing it to steal credentials from sites like Amazon, Github, and Google, along with online wallets such as MyEtherWallet and MyMonero, and Idex.market cryptocurrency trading
Two Zero-Day Exploits Found After Someone Uploaded 'Unarmed' PoC to VirusTotal

Two Zero-Day Exploits Found After Someone Uploaded 'Unarmed' PoC to VirusTotal

July 02, 2018Swati Khandelwal
Security researchers at Microsoft have unveiled details of two critical and important zero-day vulnerabilities that had recently been discovered after someone uploaded a malicious PDF file to VirusTotal, and get patched before being used in the wild . In late March, researchers at ESET found a malicious PDF file on VirusTotal, which they shared with the security team at Microsoft "as a potential exploit for an unknown Windows kernel vulnerability." After analyzing the malicious PDF file, the Microsoft team found that the same file includes two different zero-day exploits—one for Adobe Acrobat and Reader, and the other targeting Microsoft Windows. Since the patches for both the vulnerabilities were released in the second week of May, Microsoft released details of both the vulnerabilities today, after giving users enough time to update their vulnerable operating systems and Adobe software. According to the researchers, the malicious PDF including both the zero-days e
Over 20 Million Users Installed Malicious Ad Blockers From Chrome Store

Over 20 Million Users Installed Malicious Ad Blockers From Chrome Store

April 19, 2018Mohit Kumar
If you have installed any of the below-mentioned Ad blocker extension in your Chrome browser, you could have been hacked. A security researcher has spotted five malicious ad blockers extension in the Google Chrome Store that had already been installed by at least 20 million users. Unfortunately, malicious browser extensions are nothing new. They often have access to everything you do online and could allow its creators to steal any information victims enter into any website they visit, including passwords, web browsing history and credit card details. Discovered by Andrey Meshkov, co-founder of Adguard, these five malicious extensions are copycat versions of some legitimate, well-known Ad Blockers. Creators of these extensions also used popular keywords in their names and descriptions to rank top in the search results, increasing the possibility of getting more users to download them. "All the extensions I've highlighted are simple rip-offs with a few lines of co
Simple Exploit Allows Attackers to Modify Email Content — Even After It's Sent!

Simple Exploit Allows Attackers to Modify Email Content — Even After It's Sent!

August 23, 2017Unknown
Security researchers are warning of a new, easy-to-exploit email trick that could allow an attacker to turn a seemingly benign email into a malicious one after it has already been delivered to your email inbox. Dubbed Ropemaker (stands for Remotely Originated Post-delivery Email Manipulation Attacks Keeping Email Risky), the trick was uncovered by Francisco Ribeiro, the researcher at email and cloud security firm Mimecast. A successful exploitation of the Ropemaker attack could allow an attacker to remotely modify the content of an email sent by the attacker itself, for example swapping a URL with the malicious one. This can be done even after the email has already been delivered to the recipient and made it through all the necessary spam and security filters, without requiring direct access to the recipient's computer or email application, exposing hundreds of millions of desktop email client users to malicious attacks. Ropemaker abuses Cascading Style Sheets (CSS) and Hyp
Watch Out! First-Ever Word Macro Malware for Apple Mac OS Discovered in the Wild

Watch Out! First-Ever Word Macro Malware for Apple Mac OS Discovered in the Wild

February 09, 2017Swati Khandelwal
After targeting Windows-based computers over the past few years, hackers are now shifting their interest to Macs as well. The emergence of the first macro-based Word document attack against Apple's macOS platform is the latest example to prove this. The concept of Macros dates back to 1990s. You might be familiar with the message that reads: " Warning: This document contains macros. " Macro is a series of commands and actions that help automate some tasks. Microsoft Office programs support Macros written in Visual Basic for Applications (VBA), but they can also be used for malicious activities like installing malware. Until now, hackers were cleverly using this technique to target Windows. However, security researchers have now detected the first in-the-wild instance of hackers are making use of malicious macros in Word documents to install malware on Mac computers and steal your data – an old Windows technique. The hack tricks victims into opening infected W
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