Android.Backdoor.916

Technical information

Malicious functions:

Executes code of the following detected threats:

Android.Backdoor.657.origin

Gains access to the ITelephony private interface.

Network activity:

Connecting to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) cl####.bay####.com:80
TCP(HTTP/1.1) file-e####.oss-cn-####.aliy####.com:80
TCP(HTTP/1.1) 1####.26.247.23:80
TCP(HTTP/1.1) dd.m####.t####.####.com:80
TCP(HTTP/1.1) a.e####.cn:80
TCP(HTTP/1.1) api.map.b####.com:80
TCP(HTTP/1.1) a.appj####.com:80
TCP(HTTP/1.1) 2####.205.158.45:80
TCP(HTTP/1.1) c.g####.qq.com:80
TCP(HTTP/1.1) api.e####.cn:80
TCP(HTTP/1.1) v.g####.qq.com:80
TCP(HTTP/1.1) ss####.fangtin####.com:80
TCP(HTTP/1.1) c.appj####.com:80
TCP(HTTP/1.1) amdc####.m.ta####.com:80
TCP(HTTP/1.1) pic.e####.cn:80
TCP(HTTP/1.1) s####.tc.qq.com:80
TCP(TLS/1.0) sh.wagbr####.alibaba####.com:443
TCP(TLS/1.0) api.e####.cn:443

DNS requests:

a.appj####.com
a.e####.cn
ag####.m.ta####.com
amdc####.m.ta####.com
api.e####.cn
api.map.b####.com
c.appj####.com
c.g####.qq.com
cl####.bay####.com
dd.m####.com
file-e####.oss-cn-####.aliy####.com
p####.g####.cn
pic.e####.cn
plb####.u####.com
ss####.fangtin####.com
u####.u####.com
umen####.m.ta####.com
umengj####.m.ta####.com
v.g####.qq.com

HTTP GET requests:

a.e####.cn/public/getClickUrlList.shtml?lng=####&sd=####&screenheight=##...
a.e####.cn/public/getClickUrlPoList.shtml?lng=####&sd=####&screenheight=...
a.e####.cn/public/getCommonStartUpAd.shtml?height=####&width=####&lng=##...
a.e####.cn/public/isDebugAd.shtml?ts=####&appid=####&sign=####
a.e####.cn/public/rab.shtml?id=####&network=####&machine=####
a.e####.cn/public/showUrlVisit.shtml?os=####&osversion=####&appversion=#...
api.e####.cn/public/getSecondaryHomeData.shtml?machine=####&version=####...
api.map.b####.com/location/ip?ak=####&coor=####
c.g####.qq.com/gdt_mclick.fcg?viewid=####&jtype=####&i=####&os=####&subo...
c.g####.qq.com/gdt_trace_a.fcg?actionid=####&targettype=####&tagetid=###...
cl####.bay####.com/terminal/adRequest/listener.do?t=####&data=####
dd.m####.t####.####.com/16891/8C328E4D566DC4DCEB8B48386F0FE9AD.apk?fsnam...
file-e####.oss-cn-####.aliy####.com/pgdtlogo.png
pic.e####.cn/web/223266753.jpg!m720
pic.e####.cn/web/256404539.jpg!m720
pic.e####.cn/web/257728535.jpg!m3
pic.e####.cn/web/258794635.jpg
pic.e####.cn/web/259121587.jpg!m720
pic.e####.cn/web/259883023.jpg!m720
pic.e####.cn/web/259915166.jpg
pic.e####.cn/web/260025172.jpg
s####.tc.qq.com/gdt/0/transformer_9827836395729005229_1520942878_80.jpg/...
ss####.fangtin####.com/v1/track.php?data=bW####&sign=####&ts=####&appid=...
v.g####.qq.com/gdt_stats.fcg?count=####&viewid0=####&ts=####&appid=####&...

HTTP POST requests:

a.appj####.com/jiagu/check/upgrade
amdc####.m.ta####.com/amdc/mobileDispatch?appkey=####&deviceId=####&plat...
c.appj####.com/ad/splash/stats.html

Modified file system:

Creates the following files:

/data/data/####/.imprint
/data/data/####/.jg.ic
/data/data/####/073eb0ffce455fe8d5eca0f0368731c0.0.tmp
/data/data/####/073eb0ffce455fe8d5eca0f0368731c0.1.tmp
/data/data/####/3ef9025853f77f8b8ecd7dfb494a0b39.0.tmp
/data/data/####/3ef9025853f77f8b8ecd7dfb494a0b39.1.tmp
/data/data/####/4eed2e764cc0d3ebd089c7522dc97241.0.tmp
/data/data/####/4eed2e764cc0d3ebd089c7522dc97241.1.tmp
/data/data/####/508f18f6308bc0e5296918702ebc39e4.0.tmp
/data/data/####/508f18f6308bc0e5296918702ebc39e4.1.tmp
/data/data/####/71df2a83566d8de8db877b9ef7e27ba2.0.tmp
/data/data/####/71df2a83566d8de8db877b9ef7e27ba2.1.tmp
/data/data/####/75ee04efaa6077da75e065ae3d61d472.0.tmp
/data/data/####/75ee04efaa6077da75e065ae3d61d472.1.tmp
/data/data/####/9b65fbdc0dfd75199e036f8f9397c282.0.tmp
/data/data/####/9b65fbdc0dfd75199e036f8f9397c282.1.tmp
/data/data/####/ACCS_LOAD_SO.xml
/data/data/####/ACCS_SDK.xml
/data/data/####/ACCS_SDK_CHANNEL.xml
/data/data/####/ACCS_SDK_CHANNEL.xml.bak
/data/data/####/AdloadStore.xml
/data/data/####/Agoo_AppStore.xml
/data/data/####/Alvin2.xml
/data/data/####/ContextData.xml
/data/data/####/DaemonServer
/data/data/####/Ji.xml
/data/data/####/MessageStore.db-journal
/data/data/####/MsgLogStore.db-journal
/data/data/####/UM_PROBE_DATA.xml
/data/data/####/a4af6768a43e51a66f171568ae23c59d.0.tmp
/data/data/####/a4af6768a43e51a66f171568ae23c59d.1.tmp
/data/data/####/a==7.3.1&&3.21.31_1510835287903_envelope.log
/data/data/####/accs.db-journal
/data/data/####/ad_show_time.xml
/data/data/####/agoo.pid
/data/data/####/b87a2c4768b6f51e10c5bd0e58eef8bf.0.tmp
/data/data/####/b87a2c4768b6f51e10c5bd0e58eef8bf.1.tmp
/data/data/####/cd0f9b7f4972cd130759d0bc886e55c1.0.tmp
/data/data/####/cd0f9b7f4972cd130759d0bc886e55c1.1.tmp
/data/data/####/cn.ecook.xml
/data/data/####/cn.ecookad.library.xml
/data/data/####/collectiondatabase
/data/data/####/collectiondatabase-journal
/data/data/####/d==7.3.1&&3.21.31_1510835288310_envelope.log
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/ecookdatabase
/data/data/####/ecookdatabase-journal
/data/data/####/exchangeIdentity.json
/data/data/####/exid.dat
/data/data/####/index
/data/data/####/info.xml
/data/data/####/jg_app_update_settings_random.xml
/data/data/####/journal.tmp
/data/data/####/libjiagu.so
/data/data/####/message_accs_db
/data/data/####/message_accs_db-journal
/data/data/####/multidex.version.xml
/data/data/####/ua.db
/data/data/####/ua.db-journal
/data/data/####/um_pri.xml
/data/data/####/umeng_common_config.xml
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/umeng_message_state.xml
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/data/####/webviewCookiesChromiumPrivate.db-journal
/data/media/####/.nomedia
/data/media/####/1510835234415.apk
/data/media/####/30kd5lq98t5ysvt77k64jula7.tmp
/data/media/####/3q7nwi08is44zfpoui67ghq9l.tmp
/data/media/####/499c5b41d6154e56a83eb7a77ba52918
/data/media/####/4o7qnmo5ljsru57f6ykhri0jl.tmp
/data/media/####/4roztiy5i9357d6s0zb05rld0.tmp
/data/media/####/5em92xculfcz7fq227296w1nn.tmp
/data/media/####/5yesl9z9wla9yv8i2ygpfk2ny.tmp
/data/media/####/6zcbh09qojuze9lv8qbuf8ewi.tmp
/data/media/####/743ae5e4eb504e8ab7543925d0bb8c23
/data/media/####/8743021139ca46358adedb56ec22645c
/data/media/####/Alvin2.xml
/data/media/####/ContextData.xml
/data/media/####/a106f866359f4030b41740aa20a3687f
/data/media/####/ffvgd49g4y11v3kqsgs04kow.tmp

Miscellaneous:

Executes next shell scripts:

<Package Folder>/files/DaemonServer -s <Package Folder>/lib/ -n runServer -p startservice -n <Package>/com.taobao.accs.ChannelService --user 0 -f <Package Folder> -t 600 -c agoo.pid -P <Package Folder> -K 1009527 -U tb_accs_eudemon_1.1.3 -L http://agoodm.m.taobao.com/agoo/report -D {"package":"<Package>","appKey":"umeng:59892dc0a40fa31228000183","utdid":"Wg2EHSHxHr8DAGdzx1F48JHL","sdkVersion":"221"} -I agoodm.m.taobao.com -O 80 -T -Z
chmod 500 <Package Folder>/files/DaemonServer
chmod 755 <Package Folder>/.jiagu/libjiagu.so
ls /
ls /sys/class/thermal
sh

Loads the following dynamic libraries:

libjiagu
tnet-3.1

Uses the following algorithms to encrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding
RSA
RSA-ECB-NoPadding
RSA-ECB-PKCS1Padding

Uses the following algorithms to decrypt data:

AES-CBC-PKCS5Padding
AES-CBC-PKCS7Padding

Uses special library to hide executable bytecode.

Gains access to camera interface.

Gains access to geolocation.

Gains access to network information.

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

Gains access to information about APN settings.

Adds tasks to the system scheduler.

Displays its own windows over windows of other applications.

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