Adware.Gexin.9088

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Accesses the ITelephony private interface.

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) l####.tbs.qq.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) av1.x####.com:443
TCP(TLS/1.0) ti####.c####.l####.####.com:443
TCP(TLS/1.0) www.runji####.com.cn:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5226

DNS requests:

7j####.c####.z0.####.com
av1.x####.com
c####.g####.ig####.com
c-h####.g####.com
cdn####.runji####.net
i.t####.com
l####.tbs.qq.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
www.runji####.com.cn

HTTP GET requests:

t####.c####.q####.####.com/tdata_JNg986
t####.c####.q####.####.com/tdata_MkX219
t####.c####.q####.####.com/tdata_nxn539
t####.c####.q####.####.com/tdata_zzW503

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
l####.tbs.qq.com/ajax?c=####&k=####
sdk.o####.p####.####.com/api.php?format=####&t=####

File system changes:

Creates the following files:

/data/data/####/.jg.ic
/data/data/####/1551117940380_2285
/data/data/####/1551117940450_2285
/data/data/####/1551117940516_2285
/data/data/####/1551117940605_2285
/data/data/####/1551117950897_2285
/data/data/####/1551117950937_2285
/data/data/####/1551117978534_2285
/data/data/####/1551117978567_2285
/data/data/####/1551117980481_2285
/data/data/####/1551117980524_2285
/data/data/####/1551117992540_2285
/data/data/####/1551117992637_2285
/data/data/####/1551117996147_2285
/data/data/####/1551117996191_2285
/data/data/####/1551117998426_2285
/data/data/####/1551117998471_2285
/data/data/####/1551117999434_2285
/data/data/####/1551117999473_2285
/data/data/####/SP_RUNEDU_USER.xml
/data/data/####/TD_app_pefercen_profile.xml
/data/data/####/TDpref_longtime.xml
/data/data/####/TDpref_longtime0.xml
/data/data/####/TDpref_shorttime.xml
/data/data/####/TDpref_shorttime0.xml
/data/data/####/com.zjcs.student_preferences.xml
/data/data/####/core_info
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gkt-journal
/data/data/####/gx_sp.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libjiagu.so
/data/data/####/multidex.version.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushk.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/data/data/####/tdata_JNg986
/data/data/####/tdata_JNg986.jar
/data/data/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_nxn539
/data/data/####/tdata_nxn539.jar
/data/data/####/tdata_zzW503
/data/data/####/tdata_zzW503.jar
/data/data/####/tdid.xml
/data/media/####/.tcookieid
/data/media/####/83b45c851903c7aa16f6b918fa838f3f.0.tmp
/data/media/####/83b45c851903c7aa16f6b918fa838f3f.1.tmp
/data/media/####/app.db
/data/media/####/cfd4da42a6973e356310f68c88150b26.0.tmp
/data/media/####/cfd4da42a6973e356310f68c88150b26.1.tmp
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.zjcs.student.bin
/data/media/####/com.zjcs.student.db
/data/media/####/dae03d1fba4f622e92a935dd69dabf74.0.tmp
/data/media/####/dae03d1fba4f622e92a935dd69dabf74.1.tmp
/data/media/####/eccd06bbd9ff5bcc65e1c6494fe9381a.0.tmp
/data/media/####/eccd06bbd9ff5bcc65e1c6494fe9381a.1.tmp
/data/media/####/gkt-journal
/data/media/####/gktper
/data/media/####/journal.tmp
/data/media/####/tdata_JNg986
/data/media/####/tdata_MkX219
/data/media/####/tdata_nxn539
/data/media/####/tdata_zzW503
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.receiver.GeTuiPushService 24628 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so
getprop
getprop ro.product.cpu.abi
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.receiver.GeTuiPushService 24628 300 0

Loads the following dynamic libraries:

getuiext2
imagepipeline
libjiagu

Uses the following algorithms to encrypt data:

AES-ECB-PKCS5Padding
DES-CBC-PKCS5Padding
RSA-ECB-NoPadding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-ECB-PKCS5Padding
DES-CBC-PKCS5Padding

Uses special library to hide executable bytecode.

Accesses camera interface.

Gets information about location.

Gets information about network.

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

Gets information about installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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