Trojan.BankBot.621

Technical Information

To ensure autorun and distribution

Sets the following service settings

[HKLM\System\CurrentControlSet\Services\HgO6y7xyWF5A] 'ImagePath' = '<DRIVERS>\xbgcp4uWhh.sys'
[HKLM\System\CurrentControlSet\Services\zcf8j5fI9hF] 'ImagePath' = '<DRIVERS>\MsuGUeMeRuMj.qph'
[HKLM\System\CurrentControlSet\Services\8LNGjMilaFfZJ] 'ImagePath' = '<SYSTEM32>\GfKQ07ZQ9O.sys'
[HKLM\System\CurrentControlSet\Services\YIXSlt0IR1T1] 'ImagePath' = '<SYSTEM32>\UJfgxAaFg7owCC.qed'
[HKLM\System\CurrentControlSet\Services\YSHTRk5CwIUvq] 'ImagePath' = '%WINDIR%\4piY26L7aAq.sys'
[HKLM\System\CurrentControlSet\Services\B1Lija7hu0] 'ImagePath' = '<DRIVERS>\XXrEXP7Wh8.sys'
[HKLM\System\CurrentControlSet\Services\ltCvpYO] 'ImagePath' = '<DRIVERS>\RHG3Ez.sys'
[HKLM\System\CurrentControlSet\Services\ldlZvSCA4CMiiq] 'ImagePath' = '<DRIVERS>\0Czphp8vVx.sys'

Creates the following services

'HgO6y7xyWF5A' <DRIVERS>\xbgcp4uWhh.sys
'zcf8j5fI9hF' <DRIVERS>\MsuGUeMeRuMj.qph
'8LNGjMilaFfZJ' <SYSTEM32>\GfKQ07ZQ9O.sys
'YIXSlt0IR1T1' <SYSTEM32>\UJfgxAaFg7owCC.qed
'YSHTRk5CwIUvq' %WINDIR%\4piY26L7aAq.sys
'B1Lija7hu0' <DRIVERS>\XXrEXP7Wh8.sys
'ltCvpYO' <DRIVERS>\RHG3Ez.sys
'ldlZvSCA4CMiiq' <DRIVERS>\0Czphp8vVx.sys

Malicious functions

Injects code into

the following system processes:

%WINDIR%\explorer.exe

the following user processes:

iexplore.exe
firefox.exe

Hooks functions

in browsers

firefox.exe process, wininet.dll module
firefox.exe process, nss3.dll module
firefox.exe process, mswsock.dll module

Modifies file system

Creates the following files

%WINDIR%\syswow64\drivers\xbgcp4uwhh.sys
%WINDIR%\syswow64\drivers\msuguemerumj.qph
%WINDIR%\syswow64\gfkq07zq9o.sys
%WINDIR%\syswow64\ujfgxaafg7owcc.qed
%WINDIR%\4piy26l7aaq.sys
%WINDIR%\choice.exe
<DRIVERS>\xxrexp7wh8.sys
<SYSTEM32>\catroot\{f750e6c3-38ee-11d1-85e5-00c04fc295ee}\dn8e6add9.cat
<DRIVERS>\rhg3ez.sys
<DRIVERS>\0czphp8vvx.sys
%ProgramFiles%\reference assemblies\manifest.json
%ProgramFiles%\reference assemblies\51e454.js
%ProgramFiles%\reference assemblies\665d69.html
%ProgramFiles%\reference assemblies\7ad67e.js
%ProgramFiles%\reference assemblies\lib\8f4f93.js
%WINDIR%\a1eb7\csrss.exe

Deletes the following files

%WINDIR%\syswow64\drivers\xbgcp4uwhh.sys
%WINDIR%\syswow64\drivers\msuguemerumj.qph
%WINDIR%\syswow64\gfkq07zq9o.sys
%WINDIR%\syswow64\ujfgxaafg7owcc.qed

Deletes itself.

Network activity

Connects to

'dn#.#lidns.com':443
'dn#.#lidns.com':80
'xc#.#cslw.top':80
'ap##.#ame.qq.com':80
'sp#.#aidu.com':80
'xc#.#cslw.top':443

TCP

HTTP GET requests

http://dn#.#lidns.com/resolve?na#######################
http://xc#.#cslw.top/cfg/cmc/slfdm.txt
http://xc#.#cslw.top/cfg/cmc/qzpass.txt
http://xc#.#cslw.top/cfg/cmc/b2.txt
http://nr#.#cslw.top/report/report_data?da#######################################################################################################################################################...
http://xc#.#cslw.top/cfg/cmc/ppmldb
http://xc#.#cslw.top/pgm/mds/b3abb02528414f5a/6188d79c9fc7cdae7c70c674799b20d564.zip
http://dn#.#lidns.com/resolve?na###################
http://xc#.#cslw.top/cfg/cmc/wea.txt
http://dn#.#lidns.com/resolve?na########################
http://dn#.#lidns.com/resolve?na######################
http://22#.5.5.5/resolve?na######################
http://dn#.#lidns.com/resolve?na####################
http://xc#.#cslw.top/pgm/mds/422ed73a26bc994c/a46c24a265a3bec7ba11a948e142f17e7791d60165ab87c464.zip
http://xc#.#cslw.top/cfg/cmc/sfbd.txt
http://xc#.#cslw.top/pgm/mds/71600c65a728333a/c57d344613ba8549426e5dbea86f249c6c935a8eac4509a264.zip
http://xc#.#cslw.top/cfg/cmc/ggtbd.txt
http://xc#.#cslw.top/pgm/mds/a78ecda18e438473/49e1ec46b8e1374f99cc864009781c3d56877b12ce5518a964.zip
http://sp#.#aidu.com/8aQDcjqpAAV3otqbppnN2DJv/api.php?qu###############################################################
http://xc#.#cslw.top/pgm/mpr/c995ec7fd4f57c0d/e691ad375852f8cd.zip.md5.txt
http://xc#.#cslw.top/pgm/mpr/c995ec7fd4f57c0d/e691ad375852f8cd.zip
http://xc#.#cslw.top/cfg/cmc/ping.txt
http://xc#.#cslw.top/cfg/cmc/userchange.txt
http://xc#.#cslw.top/cfg/cmc/userpq.zip
http://ap##.#ame.qq.com/comm-htdocs/ip/get_ip.php
http://xc#.#cslw.top/cfg/cmc/blacklist.txt
http://xc#.#cslw.top/pgm/mds/186dc678628340ee/219c906140f2c06be2e3db6296e78091a34c8da1c928895b64.zip
http://xc#.#cslw.top/cfg/user/c995ec7fd4f57c0d/e691ad375852f8cd.json
http://xc#.#cslw.top/cfg/pub/ms.json
http://xc#.#cslw.top/cfg/pub/ps.json
http://xc#.#cslw.top/pgm/mds/05631e93ccdb00ee/1d3049b187ce606623cd71ca2f04529ace43d0e0c871205264.zip
http://xc#.#cslw.top/pgm/mds/8a535297eaa802d1/17d0ec639db40991bbe7c285bb4fe48e0f26e9808f1e227964.zip
http://xc#.#cslw.top/pgm/mds/62761afc2f0d796a/a4fa2c8d00fc0abae2e3db6296e78091112c7b6cfbdbf26a64.zip
http://xc#.#cslw.top/pgm/mds/865609897d54b79b/2cc3b5fea2ff6d3e64a0bc664100d6ddc4135e436bb0669a64.zip
http://xc#.#cslw.top/cfg/cmc/chct.txt

Other

'dn#.#lidns.com':443
'xc#.#cslw.top':443

UDP

DNS ASK xc#.#ycsl.top
DNS ASK dn#.#lidns.com
DNS ASK xc#.#cslw.top
DNS ASK ap##.#ame.qq.com
DNS ASK sp#.#aidu.com
'23#.#23.112.211':51701
'23#.2.2.2':18804

Miscellaneous

Adds a root certificate

Creates and executes the following

'%WINDIR%\choice.exe'
'%WINDIR%\a1eb7\csrss.exe'

Executes the following

'<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "<Full path to file>"
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "%WINDIR%\choice.exe"
'%WINDIR%\syswow64\cmd.exe' /c timeout /t 1 & del /Q /F "<Full path to file>"
'%WINDIR%\syswow64\timeout.exe' /t 1
'%WINDIR%\syswow64\cmd.exe' /c timeout /t 1 & del /Q /F "<Full path to file>"' (with hidden window)