Adware.Gexin.21127

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Network activity:

Connects to:

UDP(DNS) 8####.8.4.4:53
TCP(HTTP/1.1) pin####.qq.com:80
TCP(HTTP/1.1) upl.b####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) pi####.qq.com:80
TCP(HTTP/1.1) cn-hang####.oss####.aliyun####.com:80
TCP(HTTP/1.1) mps.a####.com:80
TCP(TLS/1.0) 1####.217.168.234:443
TCP(TLS/1.0) res####.a####.com:443
TCP(TLS/1.0) www.gst####.com:443
TCP(TLS/1.0) p####.api.y####.com:443
TCP(TLS/1.0) ope####.b####.com:443
TCP(TLS/1.0) md####.google####.com:443
TCP(TLS/1.0) al####.u####.com:443
TCP(TLS/1.0) api.w####.com:443
TCP(TLS/1.0) instant####.google####.com:443
TCP(TLS/1.0) android####.go####.com:443
TCP(TLS/1.0) 2####.58.208.106:443
TCP(TLS/1.0) pin####.qq.com:443
TCP(TLS/1.0) dualsta####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) p####.google####.com:443
TCP(TLS/1.2) 1####.217.19.206:443
TCP(TLS/1.2) 1####.250.179.163:443
TCP(TLS/1.2) 2####.58.208.106:443

DNS requests:

and####.b####.qq.com
android####.go####.com
api.w####.com
cloudco####.mta.qq.com
cn-hang####.oss####.aliyun####.com
instant####.google####.com
m####.go####.com
md####.google####.com
mps.a####.com
ope####.b####.com
p####.api.y####.com
p####.google####.com
pi####.qq.com
pin####.qq.com
plb####.u####.com
res####.a####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
u####.u####.com
upl.b####.com
www.gst####.com

HTTP GET requests:

cn-hang####.oss####.aliyun####.com/amap-api/comm/upload/CoordinateSoEnhe...

HTTP POST requests:

and####.b####.qq.com/rqd/async?aid=####
mps.a####.com/ws/mps/vmap?csid=####
pi####.qq.com/mstat/report/?index=####
pin####.qq.com/request
upl.b####.com/auth.php

File system changes:

Creates the following files:

/data/data/####/.appInfo
/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/0815cef484bc4ca78d270887b0aefe77.xml
/data/data/####/1004
/data/data/####/1d2b904cbeadfb72ed9546111a231c85.0
/data/data/####/20210501215751.v1.crash
/data/data/####/2b404277c1cdd7a2d8908a910d4fbad6e9d5901e1f1895b....0.tmp
/data/data/####/Alvin2.xml
/data/data/####/AndroidTTS.xml
/data/data/####/ContextData.xml
/data/data/####/Map3DCache.xml
/data/data/####/StatisticsData.xml
/data/data/####/a==7.4.0&&4.2.0_1619895442409_envelope.log
/data/data/####/alsn20170807.db
/data/data/####/alsn20170807.db-journal
/data/data/####/baidu_tts_license
/data/data/####/base_path.xml
/data/data/####/bugly_db_-journal
/data/data/####/classes.dex
/data/data/####/classes.oat
/data/data/####/classes2.dex
/data/data/####/classes3.dex
/data/data/####/com.kuaijie.mid.world.ro.xml
/data/data/####/com.kuaijie_preferences.xml
/data/data/####/com.kuaijie_preferences.xml.bak
/data/data/####/crashrecord.xml
/data/data/####/d==7.4.0&&4.2.0_1619895443024_envelope.log
/data/data/####/dW1weF9pbnRlcm5hbF8xNjE5ODk1NDQyNjI3;
/data/data/####/dfba17c4d52138281c2597d63d6b225a.0
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/getui_sp.xml
/data/data/####/hmdb
/data/data/####/hmdb-journal
/data/data/####/i==1.2.0&&4.2.0_1619895443725_envelope.log
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/journal
/data/data/####/journal.tmp
/data/data/####/k.store
/data/data/####/libjiagu.so
/data/data/####/libwgs2gcj.so
/data/data/####/local_crash_lock
/data/data/####/local_crash_lock (deleted)
/data/data/####/loctemp.so (deleted)
/data/data/####/logdb.db
/data/data/####/logdb.db-journal
/data/data/####/maploc.xml
/data/data/####/note.db-journal
/data/data/####/pref.xml
/data/data/####/pref.xml.bak
/data/data/####/pri_tencent_analysis.db_com.kuaijie-journal
/data/data/####/pri_tencent_analysis.db_com.kuaijie;pushservice-journal
/data/data/####/proc_auxv
/data/data/####/push.pid
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/systemPre.xml
/data/data/####/systemPre.xml.bak
/data/data/####/tencent_analysis.db_com.kuaijie-journal
/data/data/####/tencent_analysis.db_com.kuaijie;pushservice-journal
/data/data/####/ttsdata
/data/data/####/ttsdata-journal
/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_common_config.xml.bak
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_general_config.xml.bak
/data/data/####/umeng_it.cache
/data/data/####/userPre.xml
/data/data/####/weibo_sdk_aid1
/data/data/####/zhuge
/data/data/####/zhuge-journal
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.umm.dat
/data/media/####/1619895443074.db (deleted)
/data/media/####/ContextData.xml
/data/media/####/OLGeo.dat
/data/media/####/OLGeo.ind
/data/media/####/OLPoi.dat
/data/media/####/OLPoi.ind
/data/media/####/alsn20170807.db
/data/media/####/alsn20170807.db-journal
/data/media/####/am_font_model.dat
/data/media/####/am_font_model.ind
/data/media/####/am_font_model_ex.dat
/data/media/####/amaponline.dat
/data/media/####/com.kuaijie.bin
/data/media/####/guide.dat
/data/media/####/guide.ind
/data/media/####/icons_5_10_1471231608.data
/data/media/####/journal
/data/media/####/journal.tmp
/data/media/####/mapheat.dat
/data/media/####/mapheat.ind
/data/media/####/sti.dat
/data/media/####/sti.ind
/data/media/####/v8_indoor_db.dat
/data/media/####/v8_indoor_db.ind
/data/media/####/vmap_engine_version.data
/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 --instruction-set=x86 --dex-file=/data/user/0/<Package>/.jiagu/classes.dex --dex-file=/data/user/0/<Package>/.jiagu/classes2.dex --dex-file=/data/user/0/<Package>/.jiagu/classes3.dex --oat-file=/data/user/0/<Package>/.jiagu/classes.oat --inline-depth-limit=0 --compiler-filter=speed
/system/bin/sh -c type su
chmod 755 /data/user/0/<Package>/.jiagu/libjiagu.so
getprop
logcat -c
logcat -d -v threadtime
logcat -d -v time
ls /

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB-NoPadding
AES-GCM-NoPadding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding
RSA-NONE-PKCS1PADDING

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-GCM-NoPadding

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.).

Gets information about APN settings.

Displays its own windows over windows of other apps.

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