Trojan.DownLoader26.59555

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'run' = '<SYSTEM32>\boy.exe'
[<HKCU>\Software\Microsoft\Windows NT\CurrentVersion\Windows] 'load' = '<SYSTEM32>\boy.exe'
[<HKLM>\SOFTWARE\Microsoft\Windows NT\CurrentVersion\Winlogon] 'shell' = 'Explorer.exe <SYSTEM32>\boy.exe'

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\iis] 'Start' = '00000002'
[<HKLM>\SYSTEM\ControlSet001\Services\iis] 'ImagePath' = '"%WINDIR%\IIS\srvany.exe" '

Malicious functions:

Searches for windows to

detect analytical utilities:

ClassName: 'FilemonClass', WindowName: ''
ClassName: '', WindowName: 'File Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'PROCMON_WINDOW_CLASS', WindowName: ''
ClassName: '', WindowName: 'Process Monitor - Sysinternals: www.sysinternals.com'
ClassName: 'RegmonClass', WindowName: ''
ClassName: '', WindowName: 'Registry Monitor - Sysinternals: www.sysinternals.com'

Modifies file system:

Creates the following files:

%WINDIR%\IIS\CPUInfo.exe
%WINDIR%\IIS\posh-0.dll
%WINDIR%\IIS\posh.dll
%WINDIR%\IIS\pcreposix-0.dll
%WINDIR%\IIS\pcrecpp-0.dll
%WINDIR%\IIS\pcre-0.dll
%WINDIR%\IIS\riar-2.dll
%WINDIR%\IIS\pcla-0.dll
%WINDIR%\IIS\libiconv-2.dll
%WINDIR%\IIS\libeay32.dll
%WINDIR%\IIS\libcurl.dll
%WINDIR%\IIS\iconv.dll
%WINDIR%\IIS\exma-1.dll
%WINDIR%\IIS\exma.dll
%WINDIR%\IIS\libxml2.dll
%WINDIR%\IIS\cnli-1.dll
%WINDIR%\IIS\ssleay32.dll
%WINDIR%\IIS\zlib1.dll
%WINDIR%\IIS\zibe.dll
%WINDIR%\IIS\xdvl-0.dll
%WINDIR%\IIS\ucl.dll
%WINDIR%\IIS\tucl-1.dll
%WINDIR%\IIS\tucl.dll
%WINDIR%\IIS\etebCore-2.x86.dll
%WINDIR%\IIS\riar.dll
%WINDIR%\IIS\trfo.dll
%WINDIR%\IIS\trch-1.dll
%WINDIR%\IIS\trch-0.dll
%WINDIR%\IIS\trch.dll
%WINDIR%\IIS\tibe-2.dll
%WINDIR%\IIS\tibe-1.dll
%WINDIR%\IIS\trfo-0.dll
%WINDIR%\IIS\tibe.dll
%WINDIR%\IIS\etebCore-2.x64.dll
%WINDIR%\IIS\eteb-2.dll
%WINDIR%\IIS\etchCore-0.x86.dll
%WINDIR%\IIS\chrome..exe
<SYSTEM32>\boy.exe
%WINDIR%\end.bat
%WINDIR%\IIS\srvany.exe
%WINDIR%\IIS\iis.reg
%WINDIR%\IIS\1.BAT
%HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\KHMHGZ4F\ip.3322[1]
%WINDIR%\IIS\qdx.bat
%WINDIR%\IIS\Esteemaudit-2.1.0.fb
%WINDIR%\IIS\chrome..fb
%WINDIR%\IIS\Cstr.exe
%WINDIR%\IIS\Cstr.fb
%WINDIR%\IIS\Cstr.xml
%WINDIR%\IIS\Esteemaudit-2.1.0.exe
%WINDIR%\IIS\chrome..xml
%WINDIR%\IIS\trfo-2.dll
%WINDIR%\IIS\Esteemaudittouch-2.1.0.exe
%WINDIR%\IIS\Eternalchampion-2.0.0.exe
%WINDIR%\IIS\Esteemaudittouch-2.1.0.xml
%WINDIR%\IIS\etchCore-0.x64.dll
%WINDIR%\IIS\etch-0.dll
%WINDIR%\IIS\esco-0.dll
%WINDIR%\IIS\dmgd-4.dll
%WINDIR%\IIS\dmgd-1.dll
%WINDIR%\IIS\Esteemaudittouch-2.1.0.fb
%WINDIR%\IIS\crli-0.dll
%WINDIR%\IIS\Esteemaudit-2.1.0.xml
%WINDIR%\IIS\cnli-0.dll
%WINDIR%\IIS\adfw-2.dll
%WINDIR%\IIS\adfw.dll
%WINDIR%\IIS\Eternalchampion-2.0.0.xml
%WINDIR%\IIS\Eternalchampion-2.0.0.fb
%WINDIR%\IIS\coli-0.dll
%HOMEPATH%\Local Settings\<INETFILES>\Content.IE5\U98D4X8H\ips138[1].asp

Deletes the following files:

<Full path to file>
%WINDIR%\end.bat
%WINDIR%\IIS\qdx.bat
%WINDIR%\IIS\1.BAT

Network activity:

Connects to:

'gx.##shpost.org':8888
'ip.#322.net':80
'ip##8.com':80

TCP:

HTTP GET requests:

http://ip.#322.net/
http://www.ip##8.com/ips138.asp?ip#### via ip##8.com

UDP:

DNS ASK gx.##shpost.org
DNS ASK ip.#322.net
DNS ASK www.ip##8.com

Miscellaneous:

Searches for the following windows:

ClassName: '18467-41' WindowName: ''
ClassName: '' WindowName: 'CPUInfo.exe'
ClassName: '' WindowName: 'svshostr.exe'
ClassName: '' WindowName: 'csrss..exe'
ClassName: '' WindowName: 'svchostr.exe'
ClassName: '' WindowName: 'sys.exe'
ClassName: '#32770' WindowName: 'chrome..exe - ????????????'
ClassName: '#32770' WindowName: 'chrome..exe - У¦УГіМРтґнОу'
ClassName: 'RegEdit_RegEdit' WindowName: ''

Creates and executes the following:

'%WINDIR%\IIS\CPUInfo.exe'

Executes the following:

'<SYSTEM32>\cmd.exe' /c ""%WINDIR%\end.bat" "
'<SYSTEM32>\netsh.exe' ipsec static add policy name=ipsec_ply
'<SYSTEM32>\cmd.exe' /c del "<Full path to file>"
'<SYSTEM32>\netsh.exe' ipsec static add filterlist name=deny_pt
'<SYSTEM32>\cmd.exe' /c ""%WINDIR%\IIS\1.BAT" "
'<SYSTEM32>\cmd.exe' /c ""%WINDIR%\IIS\qdx.bat" "
'%WINDIR%\regedit.exe' /s iis.reg
'<SYSTEM32>\schtasks.exe' /create /TN "\Microsoft\Windows\UPnP\Services" /RU SYSTEM /TR "%WINDIR%\IIS\CPUInfo.exe" /SC ONSTART