The recently discovered Red Alert 2 Android Trojan is using an infrastructure that serves fake Adobe Flash Android apps to unsuspecting users, RiskIQ has discovered.
The threat was first detailed last month, when SfyLabs researchers revealed that communication between infected bots and the command and control (C&C) server was performed using Twitter. Written from scratch, Red Alert is capable of stealing login credentials, intercepting SMS messages, and stealing contacts.
Targeting financial institutions and media organizations, the malware is using overlays to steal banking credentials and can also block and log incoming calls from banks, thus preventing intrusion detection.
Now, the RiskIQ researchers say they have managed to identify the infrastructure related to the malware. Starting from a single domain (that resolves to IP address 185.48.56[.]83), the researchers were able to find the email address used to register the domain ([email protected]), and discovered additional eight domains of interest.
Thus, the researchers found two malicious apps purporting to be Adobe Flash Player updates and which were hosted on two of these sites, namely g-shoock[.]xyz and g-shoock[.]ru.
These malicious apps can access network state, get tasks, connect to the Internet, read phone state and SMS, receive SMS messages, and write SMS. They also support commands such as RECEIVE_BOOT_COMPLETED, SYSTEM_ALERT_WINDOW, and WAKE_LOCK.
The two domains, which started resolving around the beginning of June 2017, revealed connections to a larger actor-owned infrastructure. They overlap via passive DNS on the same IP address first associated with Red Alert.
The security researchers also discovered that the infrastructure is still active and that additional Adobe Flash typosquatting domains have been registered by the actor in recent days. These domains too are used for the downloading of APK files.
“While, at this time, VirusTotal shows the APK file in question as not malicious, its connection to infrastructure previously connected to known malicious apps and the fact that the domains are typosquatting Adobe’s brand leads RiskIQ to assess that this is, in fact, malicious,” the security researchers note.
Last month, SfyLabs revealed that Red Alert would also masquerade as popular applications such as WhatsApp and Viber, Google Market update, and even Android system updates. The researchers also noted that the Trojan was targeting at least 60 banking applications with HTML overlays.
Related: New “Red Alert” Android Banking Trojan Emerges

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