Mobile malware development trick 3. CPU info logger: anti-VM and anti-sandbox. Simple Android (Kotlin) example

To add a decision gate based on the collected data to determine if the device is an emulator, you can modify your isEmulator() function to include checks for both the Android Build constants and the contents of /proc/cpuinfo. This approach ensures that the malware can make an informed decision about whether to proceed with its payload or not.

Here’s how you could implement this:

1. Check Build Constants: First, check if the device is likely an emulator based on common indicators in the Build constants.
2. Read /proc/cpuinfo: If the initial checks are inconclusive, read and analyze /proc/cpuinfo.
3. Decision Gate: Based on the results of these checks, decide whether to proceed with the payload.

Below is a sample implementation:

kotlin
 
1package com.example.demo
2
3import android.content.Context
4import android.os.Build
5import java.io.BufferedReader
6import java.io.InputStreamReader
7
8class EmulatorDetector {
9
10    fun isEmulator(context: Context): Boolean {
11        // Check Build constants first (no file I/O)
12        val buildType = Build.TYPE
13        val fingerprint = Build.FINGERPRINT
14        val radioVersion = Build.RADIO
15        
16        if ("user" == buildType ||
17
18[Read the full article at Malware Analysis, News and Indicators - Latest topics](https://malware.news/t/mobile-malware-development-trick-3-cpu-info-logger-anti-vm-and-anti-sandbox-simple-android-kotlin-example/105991)
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