Hermit Malware: Identification and Prevention

The Hermit Malware is a sophisticated, modular mobile threat that primarily functions as spyware. Its creators, allegedly linked to an Italian software company named RCS Lab, designed it to carry out invasive actions on infected devices. The malware’s versatility allows attackers to fetch corrupted modules from a Command-and-Control (C&C) server, enabling them to target specific data depending on the attacker’s goals. Though the malware’s core function revolves around surveillance, it also has a wide range of capabilities that can severely impact users’ privacy and security.

Summarizing the Hermit Malware Threat

Category	Details
Threat Type	Spyware, Modular Malware
Detection Names	Troj/SpyHider-A, Trojan.Android.Hermit
Symptoms of Infection	Slow device performance, unexpected battery drain, unusual network activity, unrecognized apps or files
Damage	Eavesdropping on calls, access to photos, videos, SMS, emails, location tracking, root access to Android devices
Distribution Methods	Malicious links, SMS messages, sideloaded apps (for iOS)
Danger Level	High (due to surveillance and potential remote control)

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What is the Hermit Malware?

The Hermit malware is a sophisticated mobile spyware threat that targets both Android and iOS devices. Unlike typical malware, Hermit operates in a modular fashion, fetching malicious payloads from its C2 server depending on the objectives of the attacker. This malware is most dangerous because of its ability to stealthily record calls, capture photos and videos, monitor SMS and emails, track locations, and even root Android devices to gain privileged access.

Initially discovered in campaigns targeting users in Italy and Kazakhstan, Hermit is distributed through SMS messages, often leading users to download a corrupted application. In some cases, the attackers used Internet Service Providers (ISPs) to disrupt mobile data, with the aim of convincing users to install the malicious app to regain internet connectivity.

The iOS version of Hermit is particularly devious, leveraging the sideloading technique to bypass Apple’s strict app store review process. By using a legitimate enterprise developer certificate, the attackers can sign their malicious app, ensuring it satisfies Apple’s code-signing requirements. To further exploit vulnerabilities, six different flaws, including two zero-day vulnerabilities, are leveraged during infection.

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The Dangers of Hermit Malware

Surveillance Capabilities

The most alarming aspect of Hermit is its ability to act as a spyware. Once installed, it can:

• Log calls: Record phone conversations without the user’s consent.
• Record audio: Capture surrounding sounds, allowing attackers to eavesdrop on personal conversations.
• Capture media: Access photos and videos stored on the infected device.
• Monitor communications: Read SMS messages and emails, exposing sensitive personal or business information.
• Track location: Monitor the device’s GPS data, tracking the victim’s movements.

Rooting Android Devices

Infected Android devices may be subjected to rooting, which provides the attacker with administrator-level privileges. This allows them to bypass security restrictions and gain full control over the device, making it difficult for the user to detect or remove the threat.

Bypassing Security on iOS

The iOS version of Hermit abuses sideloading techniques. By signing the malicious app with an enterprise certificate, the attackers bypass Apple’s code-signing requirements, making the app appear legitimate. This makes it easier for users to install the app without realizing its true nature.

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Preventive Methods to Avoid Future Hermit Infections

While removing the Hermit malware is crucial, ensuring that your device remains secure in the future is equally important. Here are some preventive methods to protect your device:

Avoid Sideloading Apps

Do not download apps from third-party sources or click on unknown links, especially those received via SMS or email. Stick to the official app stores (Google Play for Android and the Apple App Store for iOS).

Enable Two-Factor Authentication (2FA)

Enable two-factor authentication for your online accounts to add an extra layer of security, in case your personal information is accessed.

Regularly Update Your Device

Make sure your device is running the latest version of iOS or Android. Security patches often fix vulnerabilities that could be exploited by malware.

Install a Trusted Anti-Malware Tool

Install and regularly update an anti-malware tool like SpyHunter. It will help detect and remove any suspicious activity or malware that may try to infiltrate your device.

Be Cautious with Links and Attachments

Do not click on suspicious links or download attachments from unknown sources. Cybercriminals often disguise malware in legitimate-looking messages.

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Conclusion

The Hermit malware represents a serious and evolving threat to mobile device security. Its ability to spy on users, root Android devices, and abuse sideloading on iOS makes it a versatile and dangerous tool for cybercriminals. However, by using trusted anti-malware software like SpyHunter, users can remove this threat and mitigate potential damage. By following the outlined preventive methods, individuals can reduce their risk of future infections and safeguard their personal information.