Adware.Gexin.4427

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) a####.u####.com:80
TCP(HTTP/1.1) c-h####.g####.com:80
TCP(HTTP/1.1) l####.tbs.qq.com:80
TCP(HTTP/1.1) www.webdiss####.com:80
TCP(HTTP/1.1) t####.c####.q####.####.com:80
TCP(HTTP/1.1) rec####.gridsum####.com:80
TCP(HTTP/1.1) new####.c####.com:80
TCP(HTTP/1.1) i####.c####.com:80
TCP(HTTP/1.1) aa####.c####.com.####.net:80
TCP(HTTP/1.1) dia####.gridsum####.com:80
TCP(HTTP/1.1) sdk.o####.p####.####.com:80
TCP(TLS/1.0) api.map.b####.com:443
TCP(TLS/1.0) loc.map.b####.com:443
TCP(TLS/1.0) new####.c####.com:443
TCP c####.g####.ig####.com:5225
TCP sdk.o####.t####.####.com:5224

DNS requests:

7j####.c####.z0.####.com
a####.u####.com
api.map.b####.com
c####.g####.ig####.com
c-h####.g####.com
dia####.gridsum####.com
i####.c####.com
i####.c####.com
l####.tbs.qq.com
loc.map.b####.com
new####.c####.com
rec####.gridsum####.com
sdk.c####.ig####.com
sdk.o####.p####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.com
sdk.o####.t####.####.net
www.webdiss####.com

HTTP GET requests:

aa####.c####.com.####.net/201803/01/65d6d6add8a38148d02ce15e8809b4ce.jpg
aa####.c####.com.####.net/201804/17/32092bd5823017bf1c9d5b12636fb48a.jpg
aa####.c####.com.####.net/201804/17/336b14d2d7eab13f5c25a641da20ce7c.jpg
aa####.c####.com.####.net/201804/17/7c579ae0a1bba9f78eaab9d2d7e47f93.jpg
aa####.c####.com.####.net/201804/17/b58c90ac1194b68a8e53a8e45bfab066.jpg
aa####.c####.com.####.net/archive/ZmlsZT1odHRwOi8vaW1nMDEuY3p0di5jb20vMj...
dia####.gridsum####.com/receivewddiag/gs.gif?gsdelay=####&gsver=####&gsc...
i####.c####.com/clt/publish/clt//image/4/597/956.jpg
i####.c####.com/clt/publish/clt//image/4/600/535.jpg
rec####.gridsum####.com/gs.gif?gsdelay=####&gsver=####&gscmd=####&gssrvi...
t####.c####.q####.####.com/config/hz-hzv3.conf
t####.c####.q####.####.com/tdata_MkX219
t####.c####.q####.####.com/tdata_iGj879
www.webdiss####.com/recv/gs.gif?gsdelay=####&gsver=####&gscmd=####&gssrv...

HTTP POST requests:

a####.u####.com/app_logs
c-h####.g####.com/api.php?format=####&t=####
l####.tbs.qq.com/ajax?c=####&k=####
new####.c####.com/clt/clt/isFavorite.msp?WD_CP_ID=####&WD_VERSION=####&W...
new####.c####.com/clt/clt/operateApnUser.msp?WD_CP_ID=####&WD_VERSION=##...
new####.c####.com/clt/publish/clt/resource/portal/v1/addVisitCount.jsp?W...
new####.c####.com/clt/publish/clt/resource/portal/v1/commonNews.jsp?WD_C...
new####.c####.com/clt/publish/clt/resource/portal/v1/loading.jsp?WD_CP_I...
new####.c####.com/clt/publish/clt/resource/portal/v1/newsDetailData.jsp?...
new####.c####.com/clt/publish/clt/resource/portal/v1/newsList.jsp?WD_CP_...
new####.c####.com/clt/publish/clt/resource/portal/v1/newsNav.jsp?WD_CP_I...
sdk.o####.p####.####.com/api.php?format=####&t=####

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/ProConfig.xml
/data/data/####/authStatus_com.hoge.android.chinablue;remote.xml
/data/data/####/cc.db
/data/data/####/cc.db-journal
/data/data/####/clt_clt_isFavorite.msp
/data/data/####/clt_publish_clt_resource_portal_v1_addVisitCount.jsp
/data/data/####/clt_publish_clt_resource_portal_v1_commonNews.jsp
/data/data/####/clt_publish_clt_resource_portal_v1_loading.jsp
/data/data/####/clt_publish_clt_resource_portal_v1_newsDetailData.jsp
/data/data/####/clt_publish_clt_resource_portal_v1_newsList.jsp...page=1
/data/data/####/clt_publish_clt_resource_portal_v1_newsNav.jsp
/data/data/####/com.hoge.android.chinablue_preferences.xml
/data/data/####/core_info
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/firll.dat
/data/data/####/gdaemon_20161017
/data/data/####/getui_sp.xml
/data/data/####/gx_sp.xml
/data/data/####/hst.db
/data/data/####/hst.db-journal
/data/data/####/init.pid
/data/data/####/init_c1.pid
/data/data/####/libcuid.so
/data/data/####/libjiagu.so
/data/data/####/multidex.version.xml
/data/data/####/notes-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/####/tbs_download_config.xml
/data/data/####/tbs_download_stat.xml
/data/data/####/tbscoreinstall.txt
/data/data/####/tbslock.txt
/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/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/webview.db-journal
/data/media/####/.cuid
/data/media/####/.cuid2
/data/media/####/.nomedia
/data/media/####/007984787568bbcb9a9141b27e2db9b60cdc7df6654892....0.tmp
/data/media/####/08be1314bf5c6a204b5aada84d06eadf1d279f81d0d660....0.tmp
/data/media/####/0999e59dc2930c83f68391271285ea2a3188b153402e8b....0.tmp
/data/media/####/0db36deed760b8e7469d3801f383128bd96816d1c900aa....0.tmp
/data/media/####/12ab8d067303f16540ada7b288fb80e0dcd692129e7b72....0.tmp
/data/media/####/204da40b5227a2ab2bd40108313c0b902bd70cf231afd3....0.tmp
/data/media/####/2504246580d407f81fa7ee81cc38d2e2c3d2894e0c12bd....0.tmp
/data/media/####/2e8fb7a507ecf9c40d3aa4d2b2455e85d61a6f27077776....0.tmp
/data/media/####/361c6dc0d2e4556cc27989ad1670d85da85a6cee8f15ed....0.tmp
/data/media/####/3acbdb0f41e483a36a86fd0e89769fa74678887d8a3928....0.tmp
/data/media/####/4bb8a74be76a61d78a6c7442ba07c12d05fa54501a3958....0.tmp
/data/media/####/5827f1eb7efa9c067182bce756f392413edc62d3cabfb9....0.tmp
/data/media/####/63c56c0df34ee20a313ba4db5b0401be54cebaa1222211....0.tmp
/data/media/####/716f6e882b73a9097e6ca2e3589275a32b973280cb2b44....0.tmp
/data/media/####/8a1df6d415b6122a8601df223fb9a02498adf21e72e725....0.tmp
/data/media/####/9607f2ef5fd3de3e672b22fa3271674a98595d1d44a208....0.tmp
/data/media/####/981d1450eb99025972d639a56f882ea118227dbc4df128....0.tmp
/data/media/####/9c70170690a0c2e3c0533faf9ab613b814fe27f5f84d6f....0.tmp
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/aaf0715c6f6e25947e71f7defa11c5b8b0230b5d97b0cc....0.tmp
/data/media/####/app.db
/data/media/####/b62fc8b67a788746a3dba5c8ee5cdb35fd2156bad6ebe5....0.tmp
/data/media/####/c7acfd3fb849a6a161b08bc6ff4f8ec33012b8a9c5aafd....0.tmp
/data/media/####/com.getui.sdk.deviceId.db
/data/media/####/com.hoge.android.chinablue.bin
/data/media/####/com.hoge.android.chinablue.db
/data/media/####/com.igexin.sdk.deviceId.db
/data/media/####/d0fe9e96839fada57c8d87053fdcd5ca547866def8389a....0.tmp
/data/media/####/d574785cb984373c3bbef5856caca4956991fd96c16a17....0.tmp
/data/media/####/dcdd2224bb3fb4ab24d0c3e939cb910d20f59a5ce2d90d....0.tmp
/data/media/####/f70e4a2d346d1d3b19da1bddd1949781894290b2869dd7....0.tmp
/data/media/####/fb91f0d110e64b756f756f26258f2263e0f40c108b25e5....0.tmp
/data/media/####/journal.tmp
/data/media/####/tdata_MkX219
/data/media/####/tdata_iGj879
/data/media/####/test.log

Miscellaneous:

Executes next shell scripts:

<Package Folder>/files/gdaemon_20161017 0 <Package>/com.cztv.chinabluenews.push.LocalPushService 25552 300 0
chmod 700 <Package Folder>/files/gdaemon_20161017
chmod 755 <Package Folder>/.jiagu/libjiagu.so
getprop ro.product.cpu.abi
sh <Package Folder>/files/gdaemon_20161017 0 <Package>/com.cztv.chinabluenews.push.LocalPushService 25552 300 0

Loads the following dynamic libraries:

getuiext2
libjiagu
locSDK7a
pl_droidsonroids_gif

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
RSA-ECB-NoPadding
RSA-NONE-OAEPWithSHA1AndMGF1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
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.

Technologies

Terminology

Training and education

Myths

Technical information

Curing recommendations

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