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2021.12.17 01:51






















This Malware has some dangerous stealing functions such as record audio surroundings via the microphone when an infected device is in a specified location, stealing of WhatsApp messages via Accessibility Services also it can enter into an infected wifi network. Since the beginning of this malware evolution, its future keep changing many times and every time malware authors added many advance functionality and obfusticated techniques.


Some of the other versions of this malware also detected which has some extreme capability such as exfiltrate the data, like call records, text messages, geolocation, surrounding audio, calendar events, and other memory information stored on the device.


Its uses around 48 different commands in a code to perform various malicious operations some of following. According to Kaspersky labs , this Android spyware implant developed with various stages and added many futures in each and every version.


Researchers find an important payload binary that is capable of exploiting several known vulnerabilities and this payload binary added in according to the timestamp.


Cherry Picker. China Chopper. Cobalt Strike. Cobian RAT. Corona Updates. CSPY Downloader. Desert Scorpion. Exaramel for Linux. Exaramel for Windows. Gold Dragon. Golden Cup. Imminent Monitor. JSS Loader. Linux Rabbit. Net Crawler. Olympic Destroyer. It is able to steal a picture from the gallery, SMS and calls registry apps.


Kaspersky also found a variant of Skygofree targeting Windows users, a circumstance that suggests the Italian firm is also targeting machines running Windows OS.


The best way to prevent yourself from being a victim is to avoid downloading apps via third-party websites, app stores or links provided in SMS messages or emails. The journalist Thomas-Fox from Forbes magazine wrote an interesting article about Skygofree some hours after the publishing of the Kaspersky report. Thomas searched for archived versions of the website used by the Italian firm Negg and discovered that the company was looking for software engineers with experience in Android and iOS development.


I asked my colleague Dr. This lets me think that someone was protecting these hackers. Antonio Pirozzi. Many parts of the code are identical; both source code includes strings in Italian and the reference to the Italian firm are the same. Kaspersky also shared the URL from which the spyware is downloaded, and one of them was related to the version we analyzed Fake 3 mobile updater.


The sample analyzed by CSE was probably still under development. The discovery of the tool and the simplicity in attributing it to a specific actor is disconcerting and raises serious questions about the way surveillance activity must be conducted.


For an intelligence agency was not complicated to identify the surveillance activity conducted using software like Skygofree and variously interfere with the operation. Due to this feature, it is clear that the developers paid special attention to the work of the implant on Huawei devices.


Also, we found a debug version of the implant 70abb3ad6cc7e53d that contains interesting constants, including the version of the spyware. However, some facts indicate that the APK samples from stage two can also be used separately as the first step of the infection.


Below is a list of the payloads used by the Skygofree implant in the second and third stages. The reverse shell module is an external ELF file compiled by the attackers to run on Android. In the most recent case, the choice of the payload zip file depends on the device process architecture.


After an in-depth look, we found that some versions of the reverse shell payload code share similarities with PRISM — a stealth reverse shell backdoor that is available on Github. At the same time, we found an important payload binary that is trying to exploit several known vulnerabilities and escalate privileges. According to several timestamps, this payload is used by implant versions created since It can also be downloaded by a specific command. The exploit payload contains following file components:.


The first table contains devices with some Linux properties; the second contains the specific memory addresses associated with them that are needed for successful exploitation. You can find a full list of targeted models in the Appendix.


Fragment of the database with targeted devices and specific memory addresses. If the infected device is not listed in this database, the exploit tries to discover these addresses programmatically. After downloading and unpacking, the main module executes the exploit binary file. Once executed, the module attempts to get root privileges on the device by exploiting the following vulnerabilities:. After an in-depth look, we found that the exploit payload code shares several similarities with the public project android-rooting-tools.


As can be seen from the comparison, there are similar strings and also a unique comment in Italian, so it looks like the attackers created this exploit payload based on android-rooting-tools project source code.


Busybox is public software that provides several Linux tools in a single ELF file. In earlier versions, it operated with shell commands like this:. This is due to the fact that the implant needs to escalate privileges before performing social payload actions. This payload is also used by the earlier versions of the implant.


The payload will execute shell code to steal data from various applications. The example below steals Facebook data:. Upon receiving a specific command, the implant can download a special payload to grab sensitive information from external applications.


The case where we observed this involved WhatsApp. The payload can be a.