Trojan.MulDrop.1149.origin

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\software\microsoft\windows\currentversion\run] 'pIQscwcc.exe' = '%HOMEPATH%\xsYIYIcA\pIQscwcc.exe'
[<HKLM>\software\Wow6432Node\microsoft\windows\currentversion\run] 'wAwAEwsg.exe' = '%ALLUSERSPROFILE%\bIEgkgIc\wAwAEwsg.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = '<SYSTEM32>\userinit.exe,%ALLUSERSPROFILE%\bIEgkgIc\wAwAEwsg.exe,'
[<HKLM>\SOFTWARE\Wow6432Node\Microsoft\Windows NT\CurrentVersion\Winlogon] 'Userinit' = 'userinit.exe,%ALLUSERSPROFILE%\bIEgkgIc\wAwAEwsg.exe,'

Sets the following service settings

[<HKLM>\System\CurrentControlSet\Services\ZoYAIkYF] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\ZoYAIkYF] 'ImagePath' = '%ALLUSERSPROFILE%\yIgAEskY\CocEcEsI.exe'

Creates the following services

'ZoYAIkYF' %ALLUSERSPROFILE%\yIgAEskY\CocEcEsI.exe

Infects the following executable files

C:\far2\far.exe
C:\msocache\all users\{90140000-0011-0000-1000-0000000ff1ce}-c\setup.exe
%ALLUSERSPROFILE%\adobe\arm\s\10428\adobearmhelper.exe
%ALLUSERSPROFILE%\adobe\setup\{ac76ba86-7ad7-1033-7b44-ac0f074e4100}\setup.exe

Malicious functions

To complicate detection of its presence in the operating system,

forces the system hide from view:

hidden files
file extensions

blocks the following features:

User Account Control (UAC)

Modifies file system

Creates the following files

%HOMEPATH%\xsyiyica\piqscwcc
C:\rcx7a34.tmp
%ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\device.png.exe
<Current directory>\kims.ico
<Current directory>\amwi.exe
C:\rcx7bab.tmp
%ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\overlay.png.exe
<Current directory>\aewo.ico
<Current directory>\kqcy.exe
C:\rcx7cf4.tmp
%ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\superbar.png.exe
<Current directory>\ueuk.ico
%TEMP%\aggsguya.bat
<Current directory>\lsmy.exe
%TEMP%\vomgaqsg.bat
<Current directory>\qmwm.exe
<Current directory>\neqm.exe
<Current directory>\bumo.exe
<Current directory>\vuki.exe
<Current directory>\nueo.exe
<Current directory>\wske.exe
<Current directory>\nqme.exe
<Current directory>\jeak.exe
<Current directory>\scuc.exe
<Current directory>\juug.exe
<Current directory>\lgki.exe
<Current directory>\eqwi.exe
<Current directory>\pmmm.ico
<Current directory>\loei.exe
%ALLUSERSPROFILE%\microsoft\device stage\device\{113527a4-45d4-4b6f-b567-97838f1b04b0}\background.png.exe
C:\rcx78ad.tmp
<Current directory>\tuak.exe
%HOMEPATH%\xsyiyica\piqscwcc.exe
%ALLUSERSPROFILE%\biegkgic\wawaewsg.exe
%ALLUSERSPROFILE%\yigaesky\cocecesi.exe
%WINDIR%\syswow64\config\systemprofile\xsyiyica\piqscwcc
%TEMP%\iosucugc.bat
<PATH_SAMPLE>
%TEMP%\lseokeoq.bat
%ALLUSERSPROFILE%\lkgy.txt
%TEMP%\zscewwee.bat
<Current directory>\base.ico
<Current directory>\lyye.exe
C:\rcx65b4.tmp
<Current directory>\puqi.exe
<Current directory>\tgqc.exe
<Current directory>\eggy.ico
<Current directory>\iwao.ico
<Current directory>\gsow.exe
C:\rcx6a77.tmp
C:\msocache\all users\{90140000-0115-0409-1000-0000000ff1ce}-c\dw20.exe.exe
<Current directory>\cgsy.ico
<Current directory>\icgi.exe
C:\rcx6cc9.tmp
<Current directory>\yykq.ico
<Current directory>\qkuu.exe
C:\rcx6e9e.tmp
%TEMP%\nmcsaouo.bat
<Current directory>\lqsc.ico
%ALLUSERSPROFILE%\biegkgic\wawaewsg
C:\rcx6854.tmp
<Current directory>\fmmg.exe

Deletes the following files

%TEMP%\iosucugc.bat
<Current directory>\kqcy.exe
%TEMP%\aggsguya.bat
%TEMP%\vomgaqsg.bat
<Current directory>\tgqc.exe
<Current directory>\qmwm.exe
<Current directory>\neqm.exe
<Current directory>\bumo.exe
<Current directory>\nueo.exe
<Current directory>\puqi.exe
<Current directory>\wske.exe
<Current directory>\nqme.exe
<Current directory>\jeak.exe
<Current directory>\scuc.exe
<Current directory>\juug.exe
<Current directory>\lgki.exe
<Current directory>\eqwi.exe
<Current directory>\aewo.ico
<Current directory>\vuki.exe
<Current directory>\amwi.exe
<Current directory>\gsow.exe
%TEMP%\lseokeoq.bat
%TEMP%\zscewwee.bat
<Current directory>\base.ico
<Current directory>\lyye.exe
<Current directory>\eggy.ico
<Current directory>\lsmy.exe
<Current directory>\iwao.ico
<Current directory>\cgsy.ico
<Current directory>\loei.exe
<Current directory>\icgi.exe
<Current directory>\yykq.ico
<Current directory>\qkuu.exe
%TEMP%\nmcsaouo.bat
<Current directory>\lqsc.ico
<Current directory>\tuak.exe
<Current directory>\pmmm.ico
<Current directory>\kims.ico
<Current directory>\fmmg.exe

Moves the following files

from C:\rcx65b4.tmp to <Current directory>\lyye.exe
from C:\rcx6854.tmp to <Current directory>\lsmy.exe
from C:\rcx6a77.tmp to <Current directory>\gsow.exe
from C:\rcx6cc9.tmp to <Current directory>\icgi.exe
from C:\rcx6e9e.tmp to <Current directory>\qkuu.exe
from C:\rcx78ad.tmp to <Current directory>\tuak.exe
from C:\rcx7a34.tmp to <Current directory>\loei.exe
from C:\rcx7bab.tmp to <Current directory>\amwi.exe
from C:\rcx7cf4.tmp to <Current directory>\kqcy.exe

Network activity

TCP

HTTP GET requests

http://google.com/

'bl##k.io':443

UDP

DNS ASK bl##k.io
DNS ASK google.com

Miscellaneous

Searches for the following windows

ClassName: '' WindowName: 'wAwAEwsg.exe'
ClassName: '' WindowName: 'Microsoft Windows'
ClassName: '' WindowName: 'pIQscwcc.exe'

Creates and executes the following

'%HOMEPATH%\xsyiyica\piqscwcc.exe'
'%ALLUSERSPROFILE%\biegkgic\wawaewsg.exe'
'%ALLUSERSPROFILE%\yigaesky\cocecesi.exe'
'%WINDIR%\syswow64\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1' (with hidden window)
'%WINDIR%\syswow64\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2' (with hidden window)
'%WINDIR%\syswow64\reg.exe' add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f' (with hidden window)

Executes the following

'%WINDIR%\syswow64\cmd.exe' /c "<PATH_SAMPLE>"
'%WINDIR%\syswow64\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v HideFileExt /t REG_DWORD /d 1
'%WINDIR%\syswow64\reg.exe' add HKCU\Software\Microsoft\Windows\CurrentVersion\Explorer\Advanced /f /v Hidden /t REG_DWORD /d 2
'%WINDIR%\syswow64\reg.exe' add HKLM\SOFTWARE\Microsoft\Windows\CurrentVersion\Policies\System /v EnableLUA /d 0 /t REG_DWORD /f

テクノロジー

用語

トレーニングコースおよび啓蒙プロジェクト

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Technical Information

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