Adware.Gexin.2030

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(TLS/1.0) e.crashly####.com:443
TCP(TLS/1.0) sett####.crashly####.com:443
TCP(TLS/1.0) rep####.crashly####.com:443
TCP(TLS/1.0) eco####.me####.com.####.com:443

DNS requests:

a####.u####.com
and####.b####.qq.com
e.crashly####.com
eco####.me####.com
rep####.crashly####.com
sett####.crashly####.com

HTTP POST requests:

a####.u####.com/app_logs
and####.b####.qq.com/rqd/async

Modified file system:

Creates the following files:

/data/anr/traces.txt
/data/data/####/.imprint
/data/data/####/1002
/data/data/####/1004
/data/data/####/1be1489535b6504029fb98f248e2822f61cb4820291b40d....0.tmp
/data/data/####/358e3c2a27dcb27e9778ff3fa36cdc07975ac5f52cb219c....0.tmp
/data/data/####/4a726ed24b82961c392d813d112cf2e23775d7c7c4a9926....0.tmp
/data/data/####/5B8A887402CE-0001-0823-409368734C68.cls_temp
/data/data/####/5B8A887402CE-0001-0823-409368734C68BeginSession.cls_temp
/data/data/####/5B8A887402CE-0001-0823-409368734C68SessionApp.cls_temp
/data/data/####/5B8A887402CE-0001-0823-409368734C68SessionCrash.cls_temp
/data/data/####/5B8A887402CE-0001-0823-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A887402CE-0001-0823-409368734C68SessionOS.cls_temp
/data/data/####/5B8A887402CE-0001-0823-409368734C68SessionUser.cls_temp
/data/data/####/5B8A888002D1-0002-0823-409368734C68BeginSession.cls_temp
/data/data/####/5B8A888002D1-0002-0823-409368734C68SessionApp.cls_temp
/data/data/####/5B8A888002D1-0002-0823-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A888002D1-0002-0823-409368734C68SessionOS.cls_temp
/data/data/####/5B8A888002D1-0002-0823-409368734C68SessionUser.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68BeginSession.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68SessionApp.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68SessionCrash.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68SessionOS.cls_temp
/data/data/####/5B8A88840219-0001-093C-409368734C68SessionUser.cls_temp
/data/data/####/5B8A88880129-0002-093C-409368734C68BeginSession.cls_temp
/data/data/####/5B8A88880129-0002-093C-409368734C68SessionApp.cls_temp
/data/data/####/5B8A88880129-0002-093C-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A88880129-0002-093C-409368734C68SessionOS.cls_temp
/data/data/####/5B8A88880129-0002-093C-409368734C68SessionUser.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68BeginSession.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68SessionApp.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68SessionCrash.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68SessionOS.cls_temp
/data/data/####/5B8A888A0399-0001-0A28-409368734C68SessionUser.cls_temp
/data/data/####/5B8A888F0003-0002-0A28-409368734C68BeginSession.cls_temp
/data/data/####/5B8A888F0003-0002-0A28-409368734C68SessionApp.cls_temp
/data/data/####/5B8A888F0003-0002-0A28-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A888F0003-0002-0A28-409368734C68SessionOS.cls_temp
/data/data/####/5B8A888F0003-0002-0A28-409368734C68SessionUser.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68BeginSession.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68SessionApp.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68SessionCrash.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68SessionOS.cls_temp
/data/data/####/5B8A88AB01ED-0001-0B32-409368734C68SessionUser.cls_temp
/data/data/####/5B8A88B2013E-0002-0B32-409368734C68BeginSession.cls_temp
/data/data/####/5B8A88B2013E-0002-0B32-409368734C68SessionApp.cls_temp
/data/data/####/5B8A88B2013E-0002-0B32-409368734C68SessionDevice.cls_temp
/data/data/####/5B8A88B2013E-0002-0B32-409368734C68SessionOS.cls_temp
/data/data/####/8483baba81155d9f15c3a036634739a193e7f0420966d68....0.tmp
/data/data/####/BuglySdkInfos.xml
/data/data/####/Meiqia.xml
/data/data/####/MultiDex.lock
/data/data/####/TwitterAdvertisingInfoPreferences.xml
/data/data/####/bugly_db_-journal
/data/data/####/bugly_db_legu-journal
/data/data/####/c6cd957f72ebe4d13ef176d9a99c19c972457d58eb00525....0.tmp
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/com.crashlytics.prefs.xml
/data/data/####/com.crashlytics.sdk.android.crashlytics-core;co...re.xml
/data/data/####/com.crashlytics.sdk.android;answers;settings.xml
/data/data/####/com.crashlytics.settings.json
/data/data/####/com.yiqizhangda.teacher.BETA_VALUES.xml
/data/data/####/crash_marker
/data/data/####/crashrecord.xml
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/initialization_marker
/data/data/####/io.fabric.sdk.android;fabric;io.fabric.sdk.andr...ng.xml
/data/data/####/journal.tmp
/data/data/####/libnfix.so
/data/data/####/libshella-2.9.0.2.so
/data/data/####/libufix.so
/data/data/####/local_crash_lock
/data/data/####/local_crash_lock (deleted)
/data/data/####/meiqia.db
/data/data/####/meiqia.db-journal
/data/data/####/mix.dex
/data/data/####/multidex.version.xml
/data/data/####/native_record_lock
/data/data/####/sa_19cd7164-208e-420f-918b-bb0849a4e790_1535805579427.tap
/data/data/####/sa_1eb04ed8-61b2-41d8-9a2d-1ccd2f341d91_1535805557835.tap
/data/data/####/sa_21ec6d85-3cf4-4bbd-b666-d30c68b0781c_1535805612013.tap
/data/data/####/sa_255738c9-3dd5-4350-8b7e-4c6c79d53dbd_1535805570439.tap
/data/data/####/sa_9b37d1e2-8e83-454e-b58d-53e3064ce838_1535805557355.tap
/data/data/####/sa_c308f68b-56a6-4ec9-8e42-d7b9836dfe70_1535805620023.tap
/data/data/####/security_info
/data/data/####/session_analytics.tap
/data/data/####/session_analytics.tap.tmp
/data/data/####/share_data.xml
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache

Miscellaneous:

Executes next shell scripts:

/system/bin/sh -c getprop
/system/bin/sh -c getprop ro.aa.romver
/system/bin/sh -c getprop ro.board.platform
/system/bin/sh -c getprop ro.build.fingerprint
/system/bin/sh -c getprop ro.build.nubia.rom.name
/system/bin/sh -c getprop ro.build.rom.id
/system/bin/sh -c getprop ro.build.tyd.kbstyle_version
/system/bin/sh -c getprop ro.build.version.emui
/system/bin/sh -c getprop ro.build.version.opporom
/system/bin/sh -c getprop ro.gn.gnromvernumber
/system/bin/sh -c getprop ro.lenovo.series
/system/bin/sh -c getprop ro.lewa.version
/system/bin/sh -c getprop ro.meizu.product.model
/system/bin/sh -c getprop ro.miui.ui.version.name
/system/bin/sh -c getprop ro.vivo.os.build.display.id
/system/bin/sh -c type su
chmod 700 <Package Folder>/tx_shell/libnfix.so
chmod 700 <Package Folder>/tx_shell/libshella-2.9.0.2.so
chmod 700 <Package Folder>/tx_shell/libufix.so
getprop
getprop ro.aa.romver
getprop ro.board.platform
getprop ro.build.fingerprint
getprop ro.build.nubia.rom.name
getprop ro.build.rom.id
getprop ro.build.tyd.kbstyle_version
getprop ro.build.version.emui
getprop ro.build.version.opporom
getprop ro.gn.gnromvernumber
getprop ro.lenovo.series
getprop ro.lewa.version
getprop ro.meizu.product.model
getprop ro.miui.ui.version.name
getprop ro.vivo.os.build.display.id
getprop ro.yunos.version
logcat -d -v threadtime

Loads the following dynamic libraries:

Bugly
libnfix
libshella-2.9.0.2
libufix
nfix
ufix

Uses the following algorithms to encrypt data:

AES-CBC-PKCS7Padding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS7Padding

Uses special library to hide executable bytecode.

Gains access to network information.

Gains access to telephone information (number, imei, etc.).

Displays its own windows over windows of other applications.

Technologies

Terminology

Training and education

Myths

Technical information

Curing recommendations

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