- Uc browser fast download for android pdf#
- Uc browser fast download for android update#
- Uc browser fast download for android software#
Additionally, trojan modules will be able to access protected browser files and steal passwords stored in the program directory. For example, they can display phishing messages to steal usernames, passwords, bank card details, and other personal data. Thus, MITM attacks can help cybercriminals use UC Browser to spread malicious plug-ins that perform a wide variety of actions.
This library then creates a text message that says, “PWNED!”. However, due to the MITM substitution, the browser downloads and launches a different library. To open the file, the browser tries to download the corresponding plug-in from the command and control server.
Uc browser fast download for android pdf#
The video shows a potential victim who downloads a PDF document via UC Browser and tries to view it. See below an example of such an attack, modeled by our virus analysts. Since UC Browser works with unsigned plug-ins, it will launch malicious modules without any verification. This makes the browser download new modules from malicious server instead of its own command and control server. They can replace the commands with ones containing different addresses. Since the program communicates with the server over an unsecured channel (the HTTP protocol instead of the encrypted HTTPS), cybercriminals can hook the requests from the application. To download new plug-ins, the browser sends a request to the command and control server and receives a link to file in response. The vulnerable feature of UC Browser can be used to perform man-in-the-middle attacks (MITM).
Uc browser fast download for android update#
It’s impossible to be sure that cybercriminals will never get ahold of the browser developer’s servers or use the update feature to infect hundreds of millions of Android devices. Although the application has not been seen distributing trojans or unwanted software, its ability to load and launch new and unverified modules poses a potential threat.
Such trojans include and reported by our company in January and April 2018.Ī potentially dangerous updating feature has been present in the UC Browser since at least 2016. These rules were applied to prevent the distribution of modular trojans that download and launch malicious plug-ins.
Uc browser fast download for android software#
The current policy states that applications downloaded from Google Play cannot change their own code or download any software components from third-party sources. This violates Google’s rules for software distributed in its app store. Thus, the application is actually able to receive and execute code, bypassing the Google Play servers. After downloading, the program saved the library to its directory and launched it for execution. Initially, this library was not in the browser. The library was not malicious it is designed to work with MS Office documents and PDF files. The browser receives commands from the command and control server and downloads new libraries and modules, which add new features and can be used to update the software.įor example, during our analysis, UC Browser downloaded an executable Linux library from a remote server. Doctor Web has detected its hidden ability to download auxiliary components from the Internet. Anyone who has installed this software may be in danger. This violates Google Inc.’s rules and poses a serious threat because it enables any code, including malicious ones, to be downloaded to Android devices.Īs of now, UC Browser has been downloaded by over 500,000,000 Google Play users. The application is capable of downloading auxiliary software modules, bypassing Google Play servers. Doctor Web malware analysts have detected a hidden ability within the popular UC Browser to download and run questionable code on mobile devices.
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