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iOS and Android OS Targeted by Man-in-the-Middle Attacks
Malicious actors target mobile devices; Attacks install remote access Trojans to phish for login credentials
Advisory details Xsser mRAT, a remote-access Trojan for mobile devices
Akamai Technologies, Inc. (NASDAQ: AKAM), the leading provider of cloud services for delivering, optimizing and securing online content and business applications, today released, through the company's Prolexic Security & Research Team (PLXsert), a new cybersecurity threat advisory. The advisory alerts enterprises, governments and individuals to the Xsser mobile remote access Trojan (mRAT), which targets iOS and Android devices. The Xsser mRAT is spread through man-in-the-middle and phishing attacks and may involve cellphone tower eavesdropping for location-specific attacks. The advisory is available for download from www.stateoftheinternet.com/xsser.
"Sophisticated malicious actors are targeting unsuspecting mobile device users," said Stuart Scholly, senior vice president and general manager, Security Business Unit, Akamai. "Attackers are impersonating or bypassing Google and Apple app stores and using social engineering to trick users into downloading unverified apps that install malicious applications such as the Xsser remote access Trojan onto a user's mobile device. For example, attackers offered a counterfeit Flappy Birds app download to deliver the malicious software."
Jailbroken iOS devices at risk
Jailbreaking is the process of removing limitations and security checks in the iOS operating system in order to allow users to install applications from other application stores. In China, for example, 14 percent of the 60 million iOS devices are estimated to have been jailbroken, often to support the use of third-party Chinese character keyboard apps. Jailbroken phones are at greater risk for malware.
Mobile remote access Trojan: the Xsser mRAT
Formerly, Xsser mRAT targeted only Android devices, but a new variant infects jailbroken iOS devices. The app is installed via a rogue repository on Cydia, the most popular third-party application store for jailbroken iPhones. Once the malicious bundle has been installed and executed, it gains persistence – preventing the user from deleting it. The mRAT then makes server-side checks and proceeds to steal data from the user's device and executes remote commands as directed by its command-and-control (C2) server.
"Infected phones with the remote access software installed could be used for a wide variety of malicious purposes including surveillance, the stealing of login credentials, launching distributed denial of service (DDoS) attacks, and more," added Scholly. "With more than a billion smartphone users worldwide, this kind of malware creates significant risks to privacy and a risk of rampant illegal activity."
The best protection is to prevent infection
It is difficult to detect whether a phone is under attack from malware such as Xsser mRAT, so a focus on prevention is necessary. Virtual private networks (VPN), two-factor authentication, peer-to-peer proximity networking and commercial phone security applications can provide some protection. Avoiding the use of free Wi-Fi hotspots and automatic connections, ignoring unexpected communications, not jailbreaking phones and not using apps from untrusted sources are some of the self-protection approaches discussed in the advisory.
Get the Man-in-the-Middle Attacks Target iOS and Android Threat Advisory to learn more
In the advisory, PLXsert shares its analysis and details, including:
Open source intelligence about attacks against mobile devices
How attackers access Android devices
How attackers access iOS devices
Man-in-the-middle GSM and CDMA vulnerabilities
Why jailbroken phones are at high risk
How Xsser mRAT ends up on mobile phones
The malicious use of the Cydia repository
Infection prevention tips
Akamai® is the leading provider of cloud services for delivering, optimizing and securing online content and business applications. At the core of the Company’s solutions is the Akamai Intelligent Platform™ providing extensive reach, coupled with unmatched reliability, security, visibility and expertise. Akamai removes the complexities of connecting the increasingly mobile world, supporting 24/7 consumer demand, and enabling enterprises to securely leverage the cloud. To learn more about how Akamai is accelerating the pace of innovation in a hyperconnected world, please visit www.akamai.com or blogs.akamai.com, and follow @Akamai on Twitter.