Android.Packed.52077

Technical information

Malicious functions:

Executes code of the following detected threats:

Adware.Dowgin.14.origin
Adware.Dowgin.3.origin
Android.DownLoader.455.origin
Android.DownLoader.502.origin

Network activity:

Connects to:

UDP(DNS) <Google DNS>
TCP(HTTP/1.1) a####.u####.com:80
TCP(HTTP/1.1) hm.b####.com:80
TCP(HTTP/1.1) f.you####.com:80
TCP(HTTP/1.1) oc.u####.com:80
TCP(HTTP/1.1) www.zuoye####.com.cn:80
TCP(HTTP/1.1) t####.qq.com:80
TCP(HTTP/1.1) t####.qq.com:443
TCP(TLS/1.0) h####.b####.com.####.com:443
TCP p1.jz####.com:7801
TCP t####.qq.com:80
TCP p2.jz####.com:7701
TCP p2.jz####.com:7803
TCP t####.qq.com:443
TCP t1.jz####.com:7703
TCP t1.jz####.com:7802
TCP p2.jz####.com:7802
TCP p2.jz####.com:7702

DNS requests:

a####.u####.com
api.appgen####.com
au.u####.co
au.u####.com
f.you####.com
h####.b####.com
hi.bi.h####.cn
hm.b####.com
int.d####.s####.####.cn
oc.u####.co
oc.u####.com
p1.jz####.com
p2.jz####.com
p3.jz####.com
pi####.qq.com
t####.qq.com
t1.jz####.com
t2.jz####.com
t3.jz####.com
www.zuoye####.com.cn

HTTP GET requests:

f.you####.com/cdn?id=####
hm.b####.com/h.js?1b9d92d####
hm.b####.com/hm.gif?cc=####&ck=####&cl=####&ds=####&vl=####&ep=####&et=#...
hm.b####.com/hm.gif?cc=####&ck=####&cl=####&ds=####&vl=####&et=####&ja=#...
www.zuoye####.com.cn/activity/check/4?uid=####
www.zuoye####.com.cn/app/splash/null?w=####
www.zuoye####.com.cn/html/app-capture-help.html?
www.zuoye####.com.cn/img/help/app/capture_1.png
www.zuoye####.com.cn/img/help/app/capture_2.png
www.zuoye####.com.cn/img/help/app/capture_3.png
www.zuoye####.com.cn/img/help/app/edit_pic.png
www.zuoye####.com.cn/img/help/capture/demo-1.png
www.zuoye####.com.cn/img/help/capture/demo-2.png
www.zuoye####.com.cn/img/help/capture/demo-3.png
www.zuoye####.com.cn/img/help/capture/help-icon.png
www.zuoye####.com.cn/js/jquery-1.11.0.min.js
www.zuoye####.com.cn/security/ocrtoken?id=####&sn=####
www.zuoye####.com.cn/tk/pointRandom

HTTP POST requests:

a####.u####.com/app_logs
oc.u####.com/check_config_update
t####.qq.com/203.205.254.169:80/
t####.qq.com:443/203.205.254.169:443/
www.zuoye####.com.cn/security/jytoken

File system changes:

Creates the following files:

/data/data/####/-11711265601425525583
/data/data/####/-771132034-12413057
/data/data/####/.md5
/data/data/####/.sec_version
/data/data/####/.tpns.xml.xml
/data/data/####/.tpush_mta.xml
/data/data/####/015761656162601.jar
/data/data/####/1576165616581a.jar
/data/data/####/1576165618357b.jar
/data/data/####/1aeb3db.xml
/data/data/####/1aeb3db.xml.bak
/data/data/####/E_ID356507059351895.db-journal
/data/data/####/JingYouMath.db-journal
/data/data/####/_w1741835651.xml
/data/data/####/a1.db-journal
/data/data/####/a1.xml
/data/data/####/a1356507059351895.xml
/data/data/####/b1356507059351895.xml
/data/data/####/c1356507059351895.xml
/data/data/####/classes.dex
/data/data/####/classes.jar
/data/data/####/cn.izuoye.st.chuzhong
/data/data/####/cn.izuoye.st.chuzhong.art
/data/data/####/cn.izuoye.st.chuzhong.art.20
/data/data/####/cn.izuoye.st.chuzhong_preferences.xml
/data/data/####/com.jingyou.math.xml
/data/data/####/com.upkq.izjhzl.jar
/data/data/####/container.apk
/data/data/####/d1356507059351895.xml
/data/data/####/data_0
/data/data/####/data_1
/data/data/####/data_2
/data/data/####/data_3
/data/data/####/device_id.xml
/data/data/####/device_id.xml.xml
/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/####/i.xml
/data/data/####/i_fac_pre356507059351895.xml
/data/data/####/i_finfo_pre356507059351895.xml
/data/data/####/i_fionf_pre356507059351895.xml
/data/data/####/i_fionf_pre356507059351895.xml.bak
/data/data/####/index
/data/data/####/libcpu
/data/data/####/libsecexe.x86.so
/data/data/####/libsecmain.x86.so
/data/data/####/libsecpreload.x86.so
/data/data/####/mobclick_agent_cached_cn.izuoye.st.chuzhong2016091814
/data/data/####/pri_tpush_tencent_analysis.db_cn.izuoye.st.chuz...ournal
/data/data/####/push_message.db-journal
/data/data/####/result_xml_pdf_template.so
/data/data/####/tpush_tencent_analysis.db_cn.izuoye.st.chuzhong...ournal
/data/data/####/umeng_general_config.xml
/data/data/####/umeng_it.cache
/data/data/####/webview.db-journal
/data/data/####/webviewCookiesChromium.db-journal
/data/media/####/.mid.txt
/data/media/####/.nomedia
/data/media/####/2019-12-12.report
/data/media/####/journal.tmp

Miscellaneous:

Executes the following shell scripts:

<Package Folder>/lib/libtpnsWatchdog.so <Package>,2100050458; 55439 203.205.235.17 [{"idx":0,"ts":%d,"et":2000,"si":0,"ui":"<IMEI>","ky":"Axg%lu","mid":"0","ev":{"ov":"18","sr":"600*752","md":"<System Property>","lg":"en","sv":"2.38","mf":"unknown","apn":"%s"}}] 0 18
<Package Folder>/lib/libtpnsWatchdog.so <Package>,2100050458;<Package>,2100050458; 55439 203.205.235.17 [{"idx":0,"ts":%d,"et":2000,"si":0,"ui":"<IMEI>","ky":"Axg%lu","mid":"67ff8b2b41220dd651379266db13b669ee93bc93","ev":{"ov":"18","sr":"600*752","md":"<System Property>","lg":"en","sv":"2.38","mf":"unknown","apn":"%s"}}] 0 18
<Package> <Package> -1836516584 0 /data/app/<Package>-1.apk 41 <Package> 43 44 1 0
<Package> <Package> -1836516584 0 /data/app/<Package>-1.apk 41 <Package> 46 47 1 0
chmod 755 <Package Folder>/.cache/<Package>
chmod 755 <Package Folder>/.cache/<Package>.art
chmod 755 <Package Folder>/.cache/<Package>.art.20
chmod 775 <Package Folder>/app_nneomodule/libcpu
getprop ro.product.cpu.abi
sh -c <Package Folder>/app_nneomodule/libcpu /storage/emulated/0/.46ee314c-8ca2-33d1-8d56-405c1786b8fb 18 1 <Package>
sh -c chmod 775 <Package Folder>/app_nneomodule/libcpu
sh <Package Folder>/lib/libtpnsWatchdog.so <Package>,2100050458; 55439 203.205.235.17 [{ idx :0, ts :%d, et :2000, si :0, ui : <IMEI> , ky : Axg%lu , mid : 0 , ev :{ ov : 18 , sr : 600*752 , md : <System Property> , lg : en , sv : 2.38 , mf : unknown , apn : %s }}] 0 18
sh <Package Folder>/lib/libtpnsWatchdog.so <Package>,2100050458;<Package>,2100050458; 55439 203.205.235.17 [{ idx :0, ts :%d, et :2000, si :0, ui : <IMEI> , ky : Axg%lu , mid : 67ff8b2b41220dd651379266db13b669ee93bc93 , ev :{ ov : 18 , sr : 600*752 , md : <System Property> , lg : en , sv : 2.38 , mf : unknown , apn : %s }}] 0 18

Loads the following dynamic libraries:

bspatch
libsecexe.x86
tpnsSecurity

Uses the following algorithms to encrypt data:

AES-CFB8-NoPadding
DES
DES-CBC-PKCS5Padding
RSA-ECB-PKCS1PADDING

Uses the following algorithms to decrypt data:

AES-CFB8-NoPadding
DES

Accesses the ITelephony private interface.

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 APN settings.

Gets information about installed apps.

Adds tasks to the system scheduler.

Displays its own windows over windows of other apps.

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