Adware.Gexin.8276

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) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) qin####.com.www.####.com:80
TCP(HTTP/1.1) c####.g####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) and####.b####.qq.com:80
TCP(HTTP/1.1) i####.t####.s####.com:80
TCP(HTTP/1.1) norma-e####.m####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) ti####.c####.l####.####.com:80
TCP(HTTP/1.1) q####.a####.com:80
TCP(HTTP/1.1) 2####.107.1.1:80
TCP(TLS/1.0) 2####.107.1.97:443
TCP(TLS/1.0) h####.cn:443
TCP(TLS/1.0) et2-na6####.wagbr####.ali####.####.com:443
TCP(TLS/1.0) is.sn####.com:443
TCP(TLS/1.0) log.h####.cn:443
TCP c####.g####.ig####.com:5226
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.man.aliy####.com
and####.b####.qq.com
c####.g####.com
c####.g####.ig####.com
c-h####.g####.com
glory####.haoh####.cn
h####.cn
i####.t####.s####.com
is.sn####.com
log.h####.cn
m.h####.cn
norma-e####.m####.com
pub-####.qin####.com
q.tinkerp####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
u####.u####.com

HTTP GET requests:

norma-e####.m####.com/android/exchange/getpublickey.do
q####.a####.com/cppartner/1x1/11x0/110x0/11000001848/11000001848.jpg
q####.a####.com/cppartner/1x1/11x0/110x0/11000001980/11000001980.jpg
q####.a####.com/cppartner/1x1/11x0/110x0/11000014857/11000014857.jpg
q####.a####.com/cppartner/1x1/11x0/110x0/11000053931/11000053931.jpg
q####.a####.com/cppartner/1x1/11x0/110x0/11000083844/11000083844.jpg
q####.a####.com/cppartner/1x1/11x0/110x0/11000084864/11000084864.jpg
qin####.com.www.####.com/tdata_EDT369
t####.c####.q####.####.com/tdata_bca864
t####.c####.q####.####.com/tdata_pTv779
t####.c####.q####.####.com/tdata_ynp969

HTTP POST requests:

and####.b####.qq.com/rqd/async?aid=####
c####.g####.com/api.php?format=####&t=####
c-h####.g####.com/api.php?format=####&t=####
i####.t####.s####.com/tracer/applist
norma-e####.m####.com/push/android/external/add.do
sdk.o####.p####.####.com/api.php?format=####&t=####
ti####.c####.l####.####.com/20843b12611dad0e/f2021_d81711374?d=####&v=####

File system changes:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/1004
/data/data/####/20843b12611dad0e_version.info
/data/data/####/8c8af5847db3
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/MultiDex.lock
/data/data/####/a==7.5.4&&1.0.7.204_1549018866566_envelope.log
/data/data/####/aliclound_httpdns.db
/data/data/####/aliclound_httpdns.db-journal
/data/data/####/bugly_db_-journal
/data/data/####/com.dzmf.zmfxsdq_dna.xml
/data/data/####/com.dzmf.zmfxsdq_preferences.xml
/data/data/####/com.dzmf.zmfxsdq_prefs.xml
/data/data/####/com.x.y.1.xml
/data/data/####/com.x.y.2.xml
/data/data/####/crashrecord.xml
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/downloader.db-journal
/data/data/####/du.lock
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/f_000001
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/httpdns_config_cache.xml
/data/data/####/index
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/ishugui.db-journal
/data/data/####/ishugui.shareInfo.xml
/data/data/####/ishugui.shareInfo.xml.bak
/data/data/####/libjiagu1142300537.so
/data/data/####/local_crash_lock
/data/data/####/multidex.version.xml
/data/data/####/mz_push_preference.xml
/data/data/####/native_record_lock
/data/data/####/p_uid.db-journal
/data/data/####/patch_server_config.xml
/data/data/####/push.pid
/data/data/####/pushext.db-journal
/data/data/####/pushg.db-journal
/data/data/####/pushsdk.db-journal
/data/data/####/run.pid
/data/data/####/security_info
/data/data/####/tdata_bca864
/data/data/####/tdata_bca864.jar
/data/data/####/tdata_pTv779
/data/data/####/tdata_pTv779.jar
/data/data/####/tdata_ynp969
/data/data/####/tdata_ynp969.jar
/data/data/####/tt_sdk_settings.xml
/data/data/####/ttopenadsdk.xml
/data/data/####/ttopensdk.db-journal
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/upload_device_data_time.xml
/data/data/####/version.lock
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/media/####/._android.dat
/data/media/####/._system.dat
/data/media/####/.duid
/data/media/####/.nomedia
/data/media/####/18245226606afeecdc7f49dd7b5e1bd61f43060bfc0be3....0.tmp
/data/media/####/2019-02-01.log.txt
/data/media/####/39d8ea56fafe5f1ba849f119959c6a3bd5f71cc7573b3c....0.tmp
/data/media/####/41949330e1b5f213bad483321cb2deb6cb44a5410b8860....0.tmp
/data/media/####/64ccdbd51132bc030006d89019d13cf4706ffd28168997....0.tmp
/data/media/####/8749ea3deb82822f76ca94997d5a861f3600563068fb0d....0.tmp
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/_android.dat
/data/media/####/_system.dat
/data/media/####/app.db
/data/media/####/com.dzmf.zmfxsdq.bin
/data/media/####/com.dzmf.zmfxsdq.db
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/duid
/data/media/####/e57dc3e9df60667a676c2bbbdf1d6a5e7edeac57ca074a....0.tmp
/data/media/####/journal.tmp
/data/media/####/shelfTemp.jpg
/data/media/####/tdata_bca864
/data/media/####/tdata_pTv779
/data/media/####/tdata_ynp969
/data/media/####/test.log

Miscellaneous:

Executes the following shell scripts:

/system/bin/sh -c getprop
/system/bin/sh -c type su
<Package Folder>/files/gdaemon_20161017 0 <Package>/com.dzpush.core.GtPushService 24625 300 0
cat /sys/class/net/wlan0/address
chmod 700 <Package Folder>/files/gdaemon_20161017
date
df
getprop
getprop ro.build.version.emui
getprop ro.letv.release.version
getprop ro.vivo.os.build.display.id
id
ip link
ls /dev/socket
ls /system/fonts
mkdir -p <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/
mount
ps
service call iphonesubinfo 1
sh -c cat /proc/meminfo
sh -c cat /sys/class/net/eth0/address
sh -c cd /proc/;cat cpuinfo
sh -c cd /proc/net/ && cat arp
sh -c cd /proc/self/;cat status
sh -c echo OTFCMEQ4NjFERDE5MkQwMEExNzE4NzlFMUZDQzEwMzU5QkYzQTY6QjMxOERGOkU4N0VCRg== > <SD-Card>/../../../../../..<SD-Card>/._android.dat
sh -c echo OTFCMEQ4NjFERDE5MkQwMEExNzE4NzlFMUZDQzEwMzU5QkYzQTY6QjMxOERGOkU4N0VCRg== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_android.dat
sh -c echo QjU4NUVFQTBCMEQ3MkI1Mzg5QjM5ODQ1MzQ1NUNFMDMzQzdBQjU6ODg2Qzc4OjI3RERDMw== > <SD-Card>/../../../../../..<SD-Card>/._system.dat
sh -c echo QjU4NUVFQTBCMEQ3MkI1Mzg5QjM5ODQ1MzQ1NUNFMDMzQzdBQjU6ODg2Qzc4OjI3RERDMw== > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/_system.dat
sh -c echo REQzMUVFNDlCNDRDRTgxQ0Y1REM1NjE0MUQ0NjFGMkFhMzFiMWYyMTQ5ODU0YWNjODZkY2FlNGE4ODYzZjk0OQo= > <SD-Card>/../../../../../..<SD-Card>/.duid
sh -c echo REQzMUVFNDlCNDRDRTgxQ0Y1REM1NjE0MUQ0NjFGMkFhMzFiMWYyMTQ5ODU0YWNjODZkY2FlNGE4ODYzZjk0OQo= > <SD-Card>/../../../../../..<SD-Card>/Android/Data/System/local/duid
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.dzpush.core.GtPushService 24625 300 0

Loads the following dynamic libraries:

Bugly
du
getuiext3
libjiagu1142300537

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB128-NoPadding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding
RSA-ECB-OAEPPadding
RSA-ECB-PKCS1Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
AES-CFB128-NoPadding
AES-ECB-PKCS5Padding
AES-GCM-NoPadding

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 installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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