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Bleeping Computer has reported an increase presence of Android/iPhone malware, normally delivered by SMS phishing campaigns. Notable malware strand, Roaming Mantis, has been seen active in Germany, Taiwan, South Korea, Japan, the US, the U.K. and most recently France.
Many other strains have been observed as well, including Autolycos, a ‘fleeceware’ variant which masquerades as different apps on the Google Play store and has been downloaded over three million times. Additionally, Microsoft has detected a Toll fraud malware that stealthily drains victim bank accounts with malicious transactions.
Some of these malware strains have post-exploitation actions like setting up automatic subscriptions to illegitimate products, or SMS spamming contacts found in the phone’s directory. These actions can increase in maliciousness, however, allowing attackers to obtain remote access, steal sensitive information, and compromise credentials.
Most Android/iPhone malware is delivered via SMS phishing (often referred to as smishing) or malicious applications available on the Google Play or Apple store, although this is not an exhaustive list. Due to these two initial compromise avenues, organizations can introduce effective countermeasures to prevent these types of compromises. The primary approach is to implement informed security awareness training for employees. All employees must be trained to identify SMS phishing messages and act accordingly (I.E., delete the message and block the sender). Additional training urging users to only download legitimate applications available on their respective app stores can be an effective approach as well.
Lastly, many iPhone malware strands will redirect users to fraudulent Apple login pages in an attempt to steal credentials. Users should be trained to be attentive to possible phishing websites.
As Android/iPhone malware increases in its sophistication and prevalence across the globe, organizations should be aware of this attack vector and train users accordingly.
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Sources
https://www.bleepingcomputer.com/news/security/roaming-mantis-hits-android-and-ios-users-in-malware-phishing-attacks/?&web_view=true
https://www.bleepingcomputer.com/news/security/new-android-malware-on-google-play-installed-3-million-times/?&web_view=true
https://www.microsoft.com/security/blog/2022/06/30/toll-fraud-malware-how-an-android-application-can-drain-your-wallet/
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