The data to be collected is not only limited to database files, but also includes some configuration and other specific files. Table 8 listed some target apps and various directories, databases and files which the malware tries to access.
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An increasing number of apps encrypt data before storing it into databases, especially for some popular communication and social apps. App developers do this to protect user data from malicious attacks like this one. To avoid this obstacle, starting in version 1. Figure 12 depicts the accessibility service configuration in which the package names of targeted apps are declared. The command used to enable the accessibility service is depicted in Figure Figure 13 Enable accessibility service silently via executing command with root privilege.
Usually, a user will click the notification to view the message, which brings the detail view to the front.
SpyDealer is capable of surveilling a compromised victim through multiple means including recording phone call and surrounding audio, recording video, taking photos, capturing screenshots, and monitoring geographical locations. It takes these actions based on commands it receives from the command and control channels described above.
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SpyDealer registers a PhoneStateListener to monitor the phone call status. Once there is an active phone call, the audio recording procedure is triggered.
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The recorded audio data is finally compressed in zip format and stored to. In addition to recording phone calls, SpyDealer is also capable of recording surrounding, ambient audio. It can be configured to record audio at a specific time range. The recorded audio file is stored to the following path in zip format. SpyDealer checks to see if the camera is available to record a video every three seconds.
In the Android system, a preview surface is required to take a video, which means the user is aware of the video recording event. To avoid this, SpyDealer intentionally sets a very tiny preview surface which, in this case, is 3. Each video is recorded for 10 seconds and is finally stored to. Using the front or rear camera depends on the configuration which the attacker can set remotely. The taken photo is stored to. Whenever the screen is turned off, it tries to get the geographical location via GPS. This location listener is notified with the updated location every 10 seconds or whenever meters of movement occurs between location updates.
If a network connection is available, the location data will be sent to the remote server in the format. However, the location data is saved locally if there is no network connection and will be uploaded later when the connection is restored. Besides many powerful capabilities described above, SpyDealer is also capable of automatically answering an incoming phone call and dynamically loading plugins downloaded from the remote server. If the incoming phone call is from a specific number, which can be remotely configured, this malware will simulate an earphone plugged event to automatically answer the phone call, which is detailed in Figure With this functionality, SpyDealer can let the victim miss phone calls without their awareness.
It employs a wide array of mechanisms to steal private information. At the same time, it accesses and exfiltrates sensitive data from more than 40 different popular apps with root privilege. With accessibility service, this malware is also capable of extracting plain text messages from target apps at real time. To remotely control the victim device, the malware implements three different C2 channels and support more than 50 commands.
WildFire is able to automatically classify SpyDealer samples as malicious and AutoFocus users can track this malware using the SpyDealer tag. Traps for Android protects Android devices, it automatically intercepts malicious apps installed on the device by leveraging WildFire and protect the device from SpyDealer apps by blocking the app and notifying the user.
We have reported information on this threat to Google, and they have created protections through Google Play Protect. SpyDealer is only completely effective against Android devices running versions between 2. On devices running later versions of Android, it can still steal significant amounts of information, but it cannot take actions that require higher privileges.
Figure 2 Content of the readme. Checks if the infected device is already rooted or not.
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If the root privilege is available, there is no need to escalate to root privilege. Installs busybox and remounts system partition as read-write by running a sequence of shell commands with superuser permission. Figure 4 Files in the downloaded raw. Copy files sux, logo. Execute png and toor. Figure 5 Content of toor. SMS SpyDealer registers a broadcast receiver with a higher priority than the default messaging app to listen for the commands via incoming SMS messages.
The collected information contains call duration, phone number and date time. The malware will automatically answer the incoming phone call when the number is the same as the set one. The information contains file path, file size and last modified time. Figure 10 TEA algorithm used to decrypt incoming command Each command starts with the command followed by a newline character and the base64 encoded arguments.
A file may be not removable because of the permission. The first part is an integer starting from 0 and increases one by one for each transition. After reaching 10,,, it will be reset to 0. WBlog Tencent Weibo 29 org. Figure 11 dealapp update procedure Accessibility Service Abuse An increasing number of apps encrypt data before storing it into databases, especially for some popular communication and social apps. Figure 14 Send extracted data with other information to the remote server Surveillance SpyDealer is capable of surveilling a compromised victim through multiple means including recording phone call and surrounding audio, recording video, taking photos, capturing screenshots, and monitoring geographical locations.
Record Video SpyDealer checks to see if the camera is available to record a video every three seconds. Other Functionalities Besides many powerful capabilities described above, SpyDealer is also capable of automatically answering an incoming phone call and dynamically loading plugins downloaded from the remote server. Sign up to receive the latest news, cyber threat intelligence and research from us Please enter your email address! Gather SMS messages which are created later than a given date in the inbox, outbox and draft box, and then send back via SMS.
Exfiltrate call histories that are later than a given date through SMS. Set the auto reply phone number. Send back the information of files under a given directory. Search files under external storage and send back the information of files that match the given suffixes, last modified time and file size. Set the screen taken interval time.
A screenshot is taken every time seconds. Collect the compromised device information including phone number, Wi-Fi MAC address, network operator, screen display metrics, camera information, etc. In any case, he or she receives full protection. It is exciting to watch every step from a single as well as a convenient dashboard. Every day, the software provides a user with a full logged and history data — use your primary browser to check the received data. Besides, now, it is possible to input a safe search for Google, Yahoo, and other popular search engines or multimedia channels.
Of course, the parental solution allows setting time restrictions for undesired apps. Google Play has Funamo parental control. It is another widely used parental control software preferred by Android users. Probably, this is the best way to supervise your children wherever you are. You turn a digital parent by enjoying simple dashboard, from which you access:.
The filtering technology of this Android parental solution is worth every cent spent. If you need to watch after a single device and have just one user registered, you may try a free offer. This one works on iPhones and iOS as well. Jailbreak is necessary on Android devices. Also, many prepaid mobile phones can be served. Developers provided it with various features.
Those are the ability to track messages, e-mails, multimedia files, GPS location, social media activity, and internet browser actions.
By the way, specialized diagnostics and 7 access to the web history is something that makes Android Auto Forward Spy stand out! Also, the app has a one-month full refund guarantee.