五一以来，国产手机受到cmtwg, nkvhu, qhsz等几款恶意软件肆虐。

受影响手机包括魅族，中国移动等国产手机。

5月12日开始有人在百度知道提问cmtwg，5月13日mx吧也有人在发贴。

我接到有问题的手机时间更早，大约就是五一之后。

出现问题的几个牌子的国产手机，似乎存在漏洞，对方可以利用4G网络，自动安插它们的软件到你的设备上。

com.wagd.qhsz的dump

com.wg.cmtwg的dump

自动安装时间点的日志

  **  ** I ActivityManager: Start proc :com.android.defcontainer/u0a20 for service com.android.defcontainer/.DefaultContainerService
   D DefContainer: Copying /storage/emulated//.tm/882a3f6d5466518c3fb5290ada5f2a89 to base.apk
  **  ** I PackageManager.DexOptimizer: Running dexopt (dex2oat) on: /data/app/vmdl533505310.tmp/base.apk pkg=com.wg.cmtwg isa=arm64 vmSafeMode=false debuggable=false target-filter=interpret-only oatDir = /data/app/vmdl533505310.tmp/oat sharedLibraries=null
  **  ** V BackupManagerService: restoreAtInstall pkg=com.wg.cmtwg token=d restoreSet=
   D DefContainer: Copying /storage/emulated//.tm/60d9d7e3febaf4ba2e3ce177747d76cf to base.apk
  **  ** I PackageManager.DexOptimizer: Running dexopt (dex2oat) on: /data/app/vmdl722489780.tmp/base.apk pkg=com.wagd.qhsz isa=arm64 vmSafeMode=false debuggable=false target-filter=interpret-only oatDir = /data/app/vmdl722489780.tmp/oat sharedLibraries=null
  **  ** I ActivityManager: Start proc :com.wg.cmtwg/u0a1** for activity com.wg.cmtwg/com.hikd.nvkhu.MainActivity
  **  ** I PackageManager.DexOptimizer: Running dexopt (dex2oat) on: /data/app/vmdl722489780.tmp/base.apk pkg=com.wagd.qhsz isa=arm64 vmSafeMode=false debuggable=false target-filter=interpret-only oatDir = /data/app/vmdl722489780.tmp/oat sharedLibraries=null
   W System  : ClassLoader referenced unknown path: /data/app/com.wg.cmtwg-/lib/arm64
   W Settings: Setting development_settings_enabled has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
   W Settings: Setting adb_enabled has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
   W art     : Class sdk.fkgh.hxx.x failed lock verification and will run slower.
   W art     : Common causes for lock verification issues are non-optimized dex code
   W art     : and incorrect proguard optimizations.
   W art     : Class sdk.fkgh.hxx.K failed lock verification and will run slower.
   W art     : Class sdk.fkgh.hxx.w failed lock verification and will run slower.
   W Settings: Setting android_id has moved from android.provider.Settings.System to android.provider.Settings.Secure, returning read-only value.
   W Settings: Setting android_id has moved from android.provider.Settings.System to android.provider.Settings.Secure, returning read-only value.
   W art     : Class sdk.fkgh.hxx.G failed lock verification and will run slower.
   D MyService: onStartCommand:
   W Settings: Setting development_settings_enabled has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
   W Settings: Setting adb_enabled has moved from android.provider.Settings.Secure to android.provider.Settings.Global.
   I DpmTcmClient: RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
  **  ** V BackupManagerService: restoreAtInstall pkg=com.wagd.qhsz token=e restoreSet=
 **  D Launcher.Model: mAllAppsList.addPackage com.wagd.qhsz
  **  ** I ActivityManager: START u0 {act=android.intent.action.MAIN flg=0x14800000 cmp=com.wagd.qhsz/com.wagd.gg.MainActivity} from uid  on display
  **  ** I ActivityManager: Start proc :com.wagd.qhsz/u0a1** for activity com.wagd.qhsz/com.wagd.gg.MainActivity
   W System  : ClassLoader referenced unknown path: /data/app/com.wagd.qhsz-/lib/arm64
   W System  : ClassLoader referenced unknown path: /data/data/com.qihoo.shielder/files
   D MyService: onStartCommand:
   I DpmTcmClient: RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
   W ResourceType: ResTable_typeSpec entry count inconsistent: given , previously
   I art     : Compiler allocated 5MB to compile boolean com.qihoo360.mobilesafe.loaded.client.i.transact(int, android.os.Parcel, android.os.Parcel, int)
   I System.out: true
   I art     : Do partial code cache collection, code=20KB, data=30KB
   I art     : After code cache collection, code=20KB, data=30KB
   I art     : Increasing code cache capacity to 128KB
  **  ** I ActivityManager: Process com.wagd.qhsz (pid ) has died
  **  ** D ActivityManager: cleanUpApplicationRecord --
  **  ** W ActivityManager: Scheduling restart of crashed service com.wagd.qhsz/com.wagd.gg.MyService in 1000ms
  **  ** I ActivityManager: Start proc :com.wagd.qhsz/u0a1** for service com.wagd.qhsz/com.wagd.gg.MyService
   W System  : ClassLoader referenced unknown path: /data/data/com.qihoo.shielder/files
   W System  : ClassLoader referenced unknown path: /data/app/com.wagd.qhsz-/lib/arm64
   D MyService: onStartCommand:
   I DpmTcmClient: RegisterTcmMonitor from: com.android.okhttp.TcmIdleTimerMonitor
   W ResourceType: ResTable_typeSpec entry count inconsistent: given , previously
   I art     : Compiler allocated 5MB to compile boolean com.qihoo360.mobilesafe.loaded.client.i.transact(int, android.os.Parcel, android.os.Parcel, int)

上面日志发生了什么?

0. 日志清单之前1分钟内有DpmTcmClient的输出，可能是在下载安装包。

1. PackageManager被调用，启动了DefaultContainer，pid=20763

2. DefaultContainer启动一条线程tid=20780，先后将下载在/sdcard/.tm目录上的安装包

882a3f6d5466518c3fb5290ada5f2a89，60d9d7e3febaf4ba2e3ce177747d76cf

安装上，并且BackupManager恢复数据。

3. AM被调用，启动 com.wg.cmtwg，pid=20812

4. com.wg.cmtwg修改设置development_settings_enabled以及adb_enabled，然后开启http连接。

5. AM被调用，启动 com.wagd.qhsz，pid=21086

6. com.wagd.qhsz修改设置development_settings_enabled以及adb_enabled，然后开启http连接。

7. pid=21086，com.wagd.qhsz.Activity死亡

8. 1分钟后，AM重启com.wagd.qhsz/com.wagd.gg.MyService, pid=22085

9. com.wagd.qhsz/com.wagd.gg.MyService开启http连接。

这几款软件都是动态加载dex，只有发作后才能看到更多东西，和任务逻辑。

下面是我最初接到的手机，发作的情况。

软件会下载各路刷广告的sdk，加载后疯狂开线程刷广告，手机几乎超载运行发热感人激动，直至重启，然后反复无电累死。

发作的手机/sdcard目录下要有如下目录

/data/data/com.wagd.qhsz

/data/data/com.wg.cmtwg

下面列一些com.wagd.qhsz下载的dex反编译后找到的字串：

com.wagd.qhsz
"com.blankj.utilcode.util.PermissionUtils$PermissionActivity"
“http_stat12.guantouyouxi.com”
_235.do d.class "FULIYOUYICHENG"
.apk net.task.InitTask "WG20200430143295" "yy2042901"
.apk net.task.d "qtt://news_detail?from=And-juaiwan-19100503&id=1427705327", "", "com.jifen.qukan"
.apk net.task.e "com.android.browser" "com.eg.android.AlipayGphone" "mBasePackageName"
*.dex com.api.a class: "http://sdktoapi.free-eyepro.com" "ad.vv.sdk"
*.dex com.lo.ca.realtimeweb.kernel.web.ai class: "wzb api inject js next_script_order="
*.dex com.lo.ca.realtimeweb.kernel.web.ak class: "qh api evaluateJavascript_qh---ua="
*.dex h.e class: "--------------------canRunBeiYeSDK-start-----------ADID==>"
*.dex h.i class: "beiyeAPI_" "com.yjl.sdk" "com.yjl.sdk.mango" "com.yjl.sdk.web" "com.yjl.sdk.xinyun" "com.yjl.sdk.baidu" "com.ext.sdk"

大概的工作原理，就是后台webview刷广告api，注入js刷数据刷流量。sdk都注名为anshuan。

下载到的dex文件都重命名后缀.do，编译后oat文件都重命名后缀.dex，如果不会用xxd区分文件格式的话，就在反编译时受阻。

所以期间正好写了一个gui4smali的demo，因为它们实在下载了太多odex。

cmtwg，qhsz，nvkhu在安装自动获取到了所有的权限，包括访问/sdcard，自动加入inet用户组，隐私风险最高级。它们似乎拥有除root和SEandroid外一切有用的权限。可以让删除它们后的手机，后台自动去下载并安装（或者说直接通过4G网络让你的手机下载并安装），安装同时授权一切。设备惹上后扛扛是一块肉鸡，而且隐私风险最高。