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In 2021, as in previous years, the largest share of attacks on mobile users belonged to malware (80.69%).
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Distribution of detected mobile threats by typeĭistribution of attacks by type of software used, 2021 ( download) Not far behind in third place lies Saudi Arabia (27.99%), where users most often came across adware from the family. Members of this family target victims’ mobile accounts, in particular by sending chargeable text messages on behalf of the victim as payment for supposedly viewing porn. In second place is China (28.86%), where users most often crossed paths with potentially unwanted apps from the family. As in the previous year, this was largely due to the active distribution of adware from the family. ** Unique users attacked as a percentage of all users of Kaspersky mobile technologies in the country.įor the fifth year in a row, Iran topped the leaderboard by share of infections: 40.22% of users there encountered mobile threats. * Excluded from the rating are countries with relatively few users of Kaspersky mobile technologies (under 10,000).
Top 10 countries by share of users attacked by mobile malware Map of infection attempts by mobile malware, 2021 ( download) Overall, the number of mobile malware installation packages dropped to around 2019 levels. In 2021, we detected 3,464,756 mobile malicious installation packages, down 2,218,938 from the previous year. Statistics Number of installation package
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Because protection against such programs is quite a live issue, we drew up some recommendations on how to guard against advanced spyware (or, at any rate, greatly complicate the intruder’s task). Speaking of mobile threats, we cannot fail to mention the high-profile investigation of the Pegasus spyware. Of the few examples of exploiting a trending topic was the Joker Trojan on Google Play, which masquerades as an app with a background wallpaper in the style of Squid Game. There were no new global cybercriminal trends.
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The Vultur backdoor uses VNC (Virtual Network Computing) to record the smartphone screen when the user opens an app that is of interest to attackers, they can monitor the on-screen events.Īnother interesting find in 2021 was the first Gamethief-type mobile Trojan aimed at stealing account credentials for the mobile version of PlayerUnknown’s Battlegrounds (PUBG).Īfter 2020, which was full of newsbreaks and opportunities for masking malware, for example, as Covid19 trackers or video conferencing apps, the pandemic topic gradually faded in the reporting year.
The Sova banker steals cookies, enabling attackers to access the user’s current session and personal mobile banking account without knowing the login credentials. The Fakecalls banker, which targets Korean users, drops outgoing calls to the victim’s bank and plays pre-recorded operator responses stored in the Trojan’s body.
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Often, to complicate dynamic analysis, unpacking actions are performed through commands from the attackers’ server and in several steps: each decrypted module contains the address of the next one, plus instructions for decrypting it.īesides apps with actual malicious functionality, there are various scamming apps on Google Play - for example, ones that imitate services where you can apply for welfare payments and redirect the user to a page asking for their data and payment of a fee.īanking Trojans acquired new capabilities in 2021.
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The most common way to sneak malware onto Google Play is for a Trojan to mimic a legitimate app already published on the site (for example, a photo editor or a VPN service) with the addition of a small piece of code to decrypt and launch a payload from the Trojan’s body or download it from the attackers’ server. Especially notable in 2021 were the Joker Trojan, which signs victims up to paid subscriptions, the Facestealer Trojan, which steals credentials from Facebook accounts, and various banking Trojan loaders. Last year saw repeat incidents of malicious code injection into popular apps through ad SDKs, as in the sensational case of CamScanner - we found malicious code inside ad libraries in the official APKPure client, as well as in a modified WhatsApp build.Įxperts also continued to find malware in apps on Google Play, despite Google’s efforts to keep threats off the platform. But it is too early to celebrate: attacks are becoming more sophisticated in terms of both malware functionality and vectors. In 2021, we observed a downward trend in the number of attacks on mobile users.
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