ESET researchers have discovered the TrojanDownloader.Agent.JI, a new virus targeting Android devices that is capable of downloading and executing additional malware.
Detected by ESET security software as Android/TrojanDownloader.Agent.JI, the trojan is distributed via compromised websites and masquerades as a Flash Player update. This and other threats on the Android platform were addressed by ESET at the Mobile World Congress.
Following installation, the malware creates a fake ‘Saving Battery’ service in the Android system and urges the victim to grant it crucial permissions within Android’s Accessibility functions. If granted, these permissions – Monitor your actions, Retrieve window content and Turn on Explore by Touch – enable the attacker to mimic the user’s actions and display whatever they want on the user’s screen.
“In cases we investigated, this trojan was built to download another trojan designed for siphoning off funds from bank accounts. However, it would take only a small change in the code for the user to get served with spyware or ransomware,” warns Lukáš Štefanko, the ESET Malware Researcher who led the analysis.
The key indicator of whether a device has been infected with this malware is the presence of a “Saving Battery” option amongst Services in the Accessibility menu. In such a case, the user should either employ a reputable mobile security app, such as ESET Mobile Security & Antivirus, to remove the threat or uninstall the app manually by going to Settings -> Application Manager -> Flash-Player.
In some instances, the user has been successfully tricked into granting Device administrator rights to the app. In such a case, it is necessary to deactivate the administrator rights first, by going to Settings -> Security -> Flash-Player. “Unfortunately, uninstalling the downloader doesn’t remove malicious apps the downloader might have installed. As with the downloader itself, the best way for cleaning up the device is using a mobile security solution,” recommends Lukáš Štefanko.
ESET security experts have prepared a set of basic recommendations for preventing infection with mobile malware:
- Only download apps or updates from a trustworthy source – in the case of an Adobe Flash Player update, the only safe place to get it from is the official Adobe website. Always check the URL address in your browser.
- Pay attention to what permissions and rights your apps request.
- Use a reputable mobile security solution.
Wannacry still alive
One and a half years after its epidemic, WannaCry ransomware tops the list of the most widespread cryptor families and the ransomware has attacked 74,621 unique users worldwide.
These attacks accounted for 28.72% of all users targeted by cryptors in Q3 2018. The percentage has risen over the last year, demonstrating more than two thirds growth against Q3 2017, when its share in cryptor attacks was 16.78%. This is just one of the main findings from Kaspersky Lab’s Q3 IT threat evolution report.
A series of cyberattacks with WannaCry cryptor occurred in May 2017 and is still considered to be one of the biggest ransomware epidemics in history. Even though Windows released a patch for its operating system to close the vulnerability exploited by EternalBlue 2 months prior to the start of the attacks, WannaCry still affected hundreds of thousands devices around the globe. As cryptors do, WannaCry turned files on victims’ computers into encrypted data and demanded ransom for decryption keys (created by threat actors to decipher the files and transform them back into the original data) making it impossible to operate the infected device.
The consequences of the WannaCry epidemic were devastating: as the victims were mainly organisations with networked systems – the work of businesses, factories and hospitals was paralysed. Even though this case demonstrated the dangers cryptors pose, and most of PCs around the world have been updated to resist the EternalBlue exploit, the statistics show that criminals still try to exploit those computers that weren’t patched and there are still plenty of them around the globe.
Overall, Kaspersky Lab security solution protected 259,867 unique users from cryptors attacks, showing a substantial rise of 39% since Q2 2018, when the figure was 158,921. The growth was rapid yet steady, with a monthly observed increase in the number of users.
“The rising share of WannaCry attacks is another reminder that epidemics don’t end as fast as they start – there are always long-running consequences. In the case of cryptors, attacks can be so severe that it is necessary to take preventive measures and patch the device, rather than deal with encrypted files later,” said Fedor Sinitsyn, security researcher at Kaspersky Lab.
To reduce the risk of infection by WannaCry and other cryptors, users are advised to:
- Always update your operating system to eliminate recent vulnerabilities and use a robust security solution with updated databases. It is also important to use the security solution that has specialised technologies to protect your data from ransomware, as Kaspersky Lab’s solutions do. Even if the newest yet unknown malware does manage to sneak through, Kaspersky Lab’s System Watcher technology is able to block and roll back all malicious changes made on a device, including the encryption of files.
- If you have bad luck and all your files are encrypted with cryptomalware, it is not recommended to pay cybercriminals, as it encourages them to continue their dirty business and infect more people’s devices. It is better to find a decryptor on the Internet – some of them are available for free here: https://noransom.kaspersky.com/
· It is also important to always have fresh backup copies of your files to be able to replace them in case they are lost (e.g. due to malware or a broken device), and store them not only on the physical object but also in cloud storage for greater reliability (don’t forget to protect your cloud storage with strong hack-proof password!)
· If you’re a business, enhance your preferred third-party security solution with the newest version of the free Kaspersky Anti-Ransomware Tool.
· To protect the corporate environment, educate your employees and IT teams, keep sensitive data separate, restrict access, and always back up everything.
· Use a dedicated security solution, such as Kaspersky Endpoint Security for Business that is powered by behaviour detection and able to roll back malicious actions. It should also include Vulnerability and Patch management features that automatically eliminates vulnerabilities and installs updates. This reduces the risk of vulnerabilities in popular software being used by cybercriminals.
· Last, but not least, remember that ransomware is a criminal offence. You shouldn’t pay. If you become a victim, report it to your local law enforcement agency.
Nokia 6.1 gets slice of Pie
HMD Global has announced that the Nokia 6.1 will start receiving Android 9 Pie – the second smartphone in the portfolio to receive the latest version of Android less than a month after the update arrived on the Nokia 7 plus.
Packed with Google’s newest software and building on the features of Android 8.0 Oreo, Android 9 Pie’s focus on artificial intelligence and machine learning gives owners a more customised and tailored experience.
Powered by the Qualcomm Snapdragon 630 Mobile Platform, the Nokia 6.1 is over 60% faster than its predecessor. Also, now offering enhanced Dual-Sight, ZEISS optics, USB-C fast-charging, Nokia spatial audio and pure, secure and up-to-date Android Oreo.
The Nokia 6.1 has been selected by Google to join the Android One family and therefore users get exclusive access to Apps Actions – a feature only available to Android One and Google Pixel devices. App Actions helps users get things done faster by predicting their next move and displaying the right action on right away.
Now with Android 9 Pie, the Nokia 6.1’s already impressive battery life is further complimented with the introduction of Adaptive Battery, an update that uses deep learning to understand usage patterns and prioritise battery power on the most important apps.
Other key features of Android 9
· Slices – Identifies relevant information on favourite apps to make them more easily accessible when needed
· Adaptive Brightness – Automatically adapts phone brightness by learning from interactions with different settings
· New system navigation – Features a single home button that provides intelligent predictions and suggestions (user enabled)