Android.BackDoor.2781

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.Backdoor.657.origin

Network activity:

Connects to:

UDP(DNS) 8####.8.4.4:53
TCP(HTTP/1.1) 1####.55.28.235:80
TCP(HTTP/1.1) sdk.api.o####.####.cn:80
TCP(HTTP/1.1) ad####.m.ta####.com:80
TCP(HTTP/1.1) api.e####.cn:80
TCP(HTTP/1.1) 1####.31.213.162:80
TCP(HTTP/1.1) pic.ange####.cn:80
TCP(HTTP/1.1) 1####.55.22.53:9099
TCP(HTTP/1.1) sh.wagbr####.aliyun####.com:80
TCP(HTTP/1.1) 47.97.2####.214:80
TCP(TLS/1.0) instant####.google####.com:443
TCP(TLS/1.0) and####.google####.com:443
TCP(TLS/1.0) 1####.194.79.95:443
TCP(TLS/1.0) dualsta####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) 1####.177.119.102:443
TCP(TLS/1.0) na61-####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) ssl.google-####.com:443
TCP(TLS/1.0) regi####.xm####.xi####.com:443
TCP(TLS/1.0) p####.google####.com:443
TCP(TLS/1.0) www.google####.com:443
TCP(TLS/1.2) 1####.177.119.102:443
TCP(TLS/1.2) 1####.194.79.95:443
TCP(TLS/1.2) 1####.177.126.94:443
TCP(TLS/1.2) www.google####.com:443
TCP(TLS/1.2) 1####.177.119.95:443

DNS requests:

a####.man.aliy####.com
ad####.m.ta####.com
and####.google####.com
api.e####.cn
instant####.google####.com
md####.google####.com
p####.google####.com
pic.ange####.cn
regi####.xm####.xi####.com
safebro####.google####.com
sdk.api.o####.####.cn
ssl.google-####.com
u####.u####.com
wcp.ta####.com
www.google####.com

HTTP GET requests:

ad####.m.ta####.com/rest/gc2?ak=####&av=####&c=####&d=####&sv=####&t=###...
api.e####.cn/public/getSecondaryHomeData.shtml?machine=####&appid=####&t...
pic.ange####.cn/web/255382462.jpg!m720
pic.ange####.cn/web/260324425.jpg!m720
pic.ange####.cn/web/262769607.jpg!m720
pic.ange####.cn/web/262981535.jpg!m720
pic.ange####.cn/web/264196459.jpg!m720

HTTP POST requests:

sdk.api.o####.####.cn/stat?support=####&md=####&tm=####&mf=####&pn=####&...
sh.wagbr####.aliyun####.com/man/api?ak=####&s=####

File system changes:

Creates the following files:

/data/data/####/.cl
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/.jg.ri
/data/data/####/.jg.store.report_cf
/data/data/####/39285EFA.dex
/data/data/####/39285EFA.dex.flock (deleted)
/data/data/####/AdloadStore.xml
/data/data/####/AdmobileApiAd_4.3.1.dex
/data/data/####/AdmobileApiAd_4.3.1.dex (deleted)
/data/data/####/AdmobileApiAd_4.3.1.dex.flock (deleted)
/data/data/####/Alvin2.xml
/data/data/####/AndroidLogPlusXl_5.7.2.dex
/data/data/####/AndroidLogPlusXl_5.7.2.dex (deleted)
/data/data/####/AndroidLogPlusXl_5.7.2.dex.flock (deleted)
/data/data/####/ContextData.xml
/data/data/####/Ji.xml
/data/data/####/MessageStore.db-journal
/data/data/####/MsgLogStore.db-journal
/data/data/####/UTCommon.xml
/data/data/####/UTCommon.xml.bak
/data/data/####/Web Data
/data/data/####/WebViewChromiumPrefs.xml
/data/data/####/affc896ff1c2d63f6c57e99fcb10e93f.xml
/data/data/####/classes.dex
/data/data/####/classes.dex;classes2.dex
/data/data/####/classes.dex;classes3.dex
/data/data/####/cn.ecook.meishirecipe.xml
/data/data/####/cn.ecook.meishirecipe_preferences.xml
/data/data/####/cn.ecook.xml
/data/data/####/cn.ecook.xml.bak
/data/data/####/com.ciba.data.xml
/data/data/####/com.google.android.gms.analytics.prefs.xml
/data/data/####/dW1weF9pbnRlcm5hbF8xNTg4NzcwNzg1MzA0;
/data/data/####/dW1weF9pbnRlcm5hbF8xNTg4NzcwNzkyNDMw;
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/gaClientId
/data/data/####/geofencing.db
/data/data/####/geofencing.db-journal
/data/data/####/google_analytics_v4.db-journal
/data/data/####/i==1.2.0&&1.30.44_1588770785301_envelope.log
/data/data/####/info.xml
/data/data/####/libjiagu.so
/data/data/####/lonLat.xml
/data/data/####/metrics_guid
/data/data/####/mipush.xml
/data/data/####/mipush.xml.bak
/data/data/####/mipush_extra.xml
/data/data/####/mipush_extra.xml.bak
/data/data/####/mipush_region
/data/data/####/mipush_region.lock
/data/data/####/proc_auxv
/data/data/####/qihoo_jiagu_crash_report.xml
/data/data/####/tiny_data.data
/data/data/####/tiny_data.lock
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_pri.xml
/data/data/####/umdat.xml
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/umeng_message_state.xml
/data/data/####/update.xml
/data/data/####/ut.db
/data/data/####/ut.db-journal
/data/data/####/webview_data.lock
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.umm.dat
/data/media/####/110fvvhye42iptj2ivji95y2g.tmp
/data/media/####/3pmo0jt6e9ggiqvf4ytfuklaa.tmp
/data/media/####/4grhow8kam6gvfnby85hfa7nl.tmp
/data/media/####/4xv8s0e4hgjsy6uy0obfhlbkz.tmp
/data/media/####/50c01294df9d48902639978235bcb56c25bc0dc8c1884e...2f.mp3
/data/media/####/5eb63bbbe01eeed093cb22bb8f5acdc325bc0dc8c1884e...2f.png
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/log.lock
/data/media/####/log1.txt
/data/media/####/t3io99auxrv0qc933lmmhj5h.tmp
/data/misc/####/primary.prof

Miscellaneous:

Executes the following shell scripts:

/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_max_freq
/system/bin/cat /sys/devices/system/cpu/cpu0/cpufreq/cpuinfo_min_freq
/system/bin/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/.00000000000/39285EFA.dex --oat-fd=40 --oat-location=/data/user/0/<Package>/.11111111111/39285EFA.dex --compiler-filter=speed
/system/bin/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/cache/AdmobileApiAd_4.3.1.dex --oat-fd=112 --oat-location=/data/user/0/<Package>/app_admobile_api_dex/AdmobileApiAd_4.3.1.dex --compiler-filter=speed
/system/bin/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/cache/AdmobileApiAd_4.3.1.dex --oat-fd=75 --oat-location=/data/user/0/<Package>/app_admobile_api_dex/AdmobileApiAd_4.3.1.dex --compiler-filter=speed
/system/bin/dex2oat --runtime-arg -classpath --runtime-arg & --instruction-set=x86 --instruction-set-features=smp,ssse3,sse4.1,sse4.2,-avx,-avx2,-lock_add,popcnt --runtime-arg -Xrelocate --boot-image=/system/framework/boot.art --runtime-arg -Xms64m --runtime-arg -Xmx512m --instruction-set-variant=x86 --instruction-set-features=default --dex-file=/data/user/0/<Package>/cache/AndroidLogPlusXl_5.7.2.dex --oat-fd=81 --oat-location=/data/user/0/<Package>/app_android_log_plus_xl/AndroidLogPlusXl_5.7.2.dex --compiler-filter=speed
app_process /system/bin com.android.commands.pm.Pm list package -3
ls /
ls /sys/class/thermal

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES
AES-CBC-PKCS7Padding
AES-ECB-PKCS5Padding
RSA-NONE-PKCS1Padding

Accesses the ITelephony private interface.

Uses special library to hide executable bytecode.

Gets information about location.

Gets information about network.

Gets information about phone status (number, IMEI, etc.).

Displays its own windows over windows of other apps.

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