Adware.Gexin.822

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Gexin.2.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) sh.wagbr####.alibaba####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(HTTP/1.1) sni.c####.q####.####.net:80
TCP(TLS/1.0) sh.wagbr####.alibaba####.com:443
TCP(TLS/1.0) a####.yunhel####.com:443
TCP(TLS/1.0) ti####.c####.l####.####.com:443
TCP(TLS/1.0) eco####.me####.com.####.com:443
TCP sdk.o####.t####.####.com:5224
TCP c####.g####.ig####.com:5225

DNS requests:

7j####.c####.z0.####.com
a####.yunhel####.com
c####.g####.ig####.com
c####.yunhel####.com
c-h####.g####.com
eco####.me####.com
log.u####.com
plb####.u####.com
s####.u####.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:

sh.wagbr####.alibaba####.com/bar/get/5a98e4e0a40fa32ea60002a1/?ud_get=####
sni.c####.q####.####.net/config/hz-hzv3.conf
sni.c####.q####.####.net/tdata_MkX219
sni.c####.q####.####.net/tdata_iGj879

HTTP POST requests:

c-h####.g####.com/api.php?format=####&t=####
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/0217a789abb9b7a2a023bf366aa429caabaa207e952015d....0.tmp
/data/data/####/049e0ee01ab69f5287e54f3bd9536715320ce8938d5c246....0.tmp
/data/data/####/1533058620477.log
/data/data/####/46cae951f967af4852e4d5b583a70b288e2526ae2c71ba1....0.tmp
/data/data/####/5d24d093807f4c589989f02de4ba926faec6075925f5818....0.tmp
/data/data/####/6a3173bfaf9079855174f172b6de022fc79b4c732c3d530....0.tmp
/data/data/####/6a95427617e5356b6f6deb084d9c116a63686c0290dd41d....0.tmp
/data/data/####/7f3b79ef40b6e14b1c0dda355017c22a065cff2c948bf17....0.tmp
/data/data/####/BuglySdkInfos.xml
/data/data/####/Meiqia.xml
/data/data/####/UM_PROBE_DATA.xml
/data/data/####/a==7.5.3&&1.6.2_1533058620407_envelope.log
/data/data/####/b1415b84ee9c9d060b3d37fb97c83c079aa6bbe2591cbfb....0.tmp
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/f_000001
/data/data/####/f_000002
/data/data/####/f_000003
/data/data/####/f_000004
/data/data/####/f_000005
/data/data/####/f_000006
/data/data/####/f_000007
/data/data/####/f_000008
/data/data/####/f_000009
/data/data/####/f_00000a
/data/data/####/f_00000b
/data/data/####/fc787bfb046a0f57a95b0ce969b78b2430a5b303811dfa8....0.tmp
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/i==1.2.0&&1.6.2_1533058619805_envelope.log
/data/data/####/index
/data/data/####/info.xml
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/journal.tmp
/data/data/####/libjiagu2130036023.so
/data/data/####/meiqia.db
/data/data/####/meiqia.db-journal
/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/####/tdata_MkX219
/data/data/####/tdata_MkX219.jar
/data/data/####/tdata_iGj879
/data/data/####/tdata_iGj879.jar
/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_location.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/umeng_socialize.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/data/####/yunhe.xml
/data/media/####/.a.dat
/data/media/####/.adfwe.dat
/data/media/####/.cca.dat
/data/media/####/.umm.dat
/data/media/####/2d73a2533ebb66013365554890f6e406.0.tmp
/data/media/####/2d73a2533ebb66013365554890f6e406.1.tmp
/data/media/####/789f92d64a16e7543c7fd532e84312c8.0.tmp
/data/media/####/789f92d64a16e7543c7fd532e84312c8.1.tmp
/data/media/####/9d4b5849219627cc7bc9b24e039cd570.0.tmp
/data/media/####/9d4b5849219627cc7bc9b24e039cd570.1.tmp
/data/media/####/9f90eb5fecdb2111e25f22c177924834.0.tmp
/data/media/####/9f90eb5fecdb2111e25f22c177924834.1.tmp
/data/media/####/app.db
/data/media/####/b2eacbe4b39d11de4ce0595c9b3b6dde.0.tmp
/data/media/####/b2eacbe4b39d11de4ce0595c9b3b6dde.1.tmp
/data/media/####/c101707aca39bc875fd2b0fab2e552a7.0.tmp
/data/media/####/c101707aca39bc875fd2b0fab2e552a7.1.tmp
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/com.yinren.yunhe.bin
/data/media/####/com.yinren.yunhe.db
/data/media/####/d0b66f0c5b9c8fdf8cc87fae5b85880d.0.tmp
/data/media/####/d0b66f0c5b9c8fdf8cc87fae5b85880d.1.tmp
/data/media/####/e6910b85232e70e70604f71b1abcbac0.0.tmp
/data/media/####/e6910b85232e70e70604f71b1abcbac0.1.tmp
/data/media/####/journal.tmp
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.log

Miscellaneous:

Executes next 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
<Package Folder>/files/gdaemon_20161017 0 <Package>/<Package>.app.message.GetuiService 24625 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu2130036023.so
ls /
ls /sys/class/thermal

Loads the following dynamic libraries:

getuiext2
libjiagu2130036023

Uses the following algorithms to encrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS7Padding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-NoPadding
AES-CBC-PKCS7Padding

Uses special library to hide executable bytecode.

Gains access to geolocation.

Gains access to network information.

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

Gains access to information about installed applications.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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