Trojan.DownLoader11.33204

Technical Information

To ensure autorun and distribution:

Modifies the following registry keys:

[<HKLM>\SOFTWARE\Microsoft\Windows\CurrentVersion\RunOnce] 'wextract_cleanup0' = 'rundll32.exe <SYSTEM32>\advpack.dll,DelNodeRunDLL32 "%TEMP%\IXP000.TMP\"'

Creates or modifies the following files:

%WINDIR%\Tasks\GoogleUpdateTaskMachineUA.job
%WINDIR%\Tasks\GoogleUpdateTaskMachineCore.job

Creates the following services:

[<HKLM>\SYSTEM\ControlSet001\Services\gupdate] 'Start' = '00000002'

Malicious functions:

Creates and executes the following:

'%PROGRAM_FILES%\Google\Update\GoogleUpdate.exe' /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB2ZXJzaW9uPSIxLjMuMjQuMTUiIHNoZWxsX3ZlcnNpb249IjEuMy4yMS4xMDMiIGlzbWFjaGluZT0iMSIgc2Vzc2lvbmlkPSJ7RTc1NENGOEQtOTJEOC00REU2LUFBNDAtNTkzMDI0OENFN0Q1fSIgaW5zdGFsbHNvdXJjZT0idGFnZ2VkbWkiIHJlcXVlc3RpZD0ie0UyODMyODE4LUM3MjEtNEJBNy1BNUJGLUJFRDYyODI4QjczNn0iIGRlZHVwPSJjciI-PGh3IHBoeXNtZW1vcnk9IjAiIHNzZT0iMSIgc3NlMj0iMSIgc3NlMz0iMSIgc3NzZTM9IjEiIHNzZTQxPSIxIiBzc2U0Mj0iMSIgYXZ4PSIwIi8-PG9zIHBsYXRmb3JtPSJ3aW4iIHZlcnNpb249IjUuMSIgc3A9IlNlcnZpY2UgUGFjayAyIiBhcmNoPSJ4ODYiLz48YXBwIGFwcGlkPSJ7NDMwRkQ0RDAtQjcyOS00RjYxLUFBMzQtOTE1MjY0ODE3OTlEfSIgdmVyc2lvbj0iIiBuZXh0dmVyc2lvbj0iMS4zLjI0LjE1IiBsYW5nPSJwdC1QVCIgYnJhbmQ9IiIgY2xpZW50PSIiIGlpZD0iezcxMkI3NDg1LUZEN0MtNEFEMS00NzhBLUNDQTNEM0YwMzlGN30iPjxldmVudCBldmVudHR5cGU9IjIiIGV2ZW50cmVzdWx0PSIxIiBlcnJvcmNvZGU9IjAiIGV4dHJhY29kZTE9IjAiIGluc3RhbGxfdGltZV9tcz0iMTExMjUiLz48L2FwcD48L3JlcXVlc3Q-
'%PROGRAM_FILES%\Google\Update\GoogleUpdate.exe' /handoff "appguid={8A69D345-D564-463C-AFF1-A69D9E530F96}&iid={712B7485-FD7C-4AD1-478A-CCA3D3F039F7}&lang=pt-PT&browser=2&usagestats=0&appname=Google%20Chrome&needsadmin=prefers&installdataindex=defaultbrowser" /installsource taggedmi /sessionid "{E754CF8D-92D8-4DE6-AA40-5930248CE7D5}"
'%PROGRAM_FILES%\Google\Update\GoogleUpdate.exe' /svc
'%PROGRAM_FILES%\Google\Update\GoogleUpdate.exe' /regserver
'%TEMP%\IXP000.TMP\CHROME~1.EXE'
'%PROGRAM_FILES%\GUM1.tmp\GoogleUpdate.exe' /installsource taggedmi /install "appguid={8A69D345-D564-463C-AFF1-A69D9E530F96}&iid={712B7485-FD7C-4AD1-478A-CCA3D3F039F7}&lang=pt-PT&browser=2&usagestats=0&appname=Google%20Chrome&needsadmin=prefers&installdataindex=defaultbrowser"
'%PROGRAM_FILES%\Google\Update\GoogleUpdate.exe' /regsvc

Modifies file system :

Creates the following files:

%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_gu.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_fr.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_hr.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_hi.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_fa.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_et.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_fil.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_fi.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_hu.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_kn.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ja.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_lt.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ko.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_is.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_id.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_iw.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_it.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_es-419.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_am.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleUpdateComRegisterShell64.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_bg.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ar.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdate.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleUpdate.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleCrashHandler64.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleCrashHandler.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_bn.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_en.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_el.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_es.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_en-GB.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_cs.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ca.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_de.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_da.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_zh-CN.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_vi.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleUpdateHelper.msi
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_zh-TW.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_tr.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_th.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ur.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_uk.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\psuser.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\npGoogleUpdate3.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleUpdateSetup.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleUpdateOnDemand.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\GoogleUpdateBroker.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\psmachine.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\psuser_64.dll
%PROGRAM_FILES%\Google\Update\GoogleUpdate.exe
%PROGRAM_FILES%\Google\Update\1.3.24.15\psmachine_64.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_te.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_no.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_nl.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_pt-BR.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_pl.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ml.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_lv.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ms.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_mr.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_pt-PT.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_sv.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_sr.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ta.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_sw.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ru.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_ro.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_sl.dll
%PROGRAM_FILES%\Google\Update\1.3.24.15\goopdateres_sk.dll
%PROGRAM_FILES%\GUM1.tmp\GoogleUpdateSetup.exe
%PROGRAM_FILES%\GUM1.tmp\goopdateres_el.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_de.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_en-GB.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_en.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ca.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_bn.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_da.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_cs.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_es.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_fr.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_fil.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_hi.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_gu.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_et.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_es-419.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_fi.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_fa.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_bg.dll
%PROGRAM_FILES%\GUM1.tmp\npGoogleUpdate3.dll
%PROGRAM_FILES%\GUM1.tmp\goopdate.dll
%PROGRAM_FILES%\GUM1.tmp\GoogleUpdateBroker.exe
%PROGRAM_FILES%\GUM1.tmp\GoogleUpdateHelper.msi
%PROGRAM_FILES%\GUT2.tmp
%TEMP%\IXP000.TMP\svchost.exe
%PROGRAM_FILES%\GUM1.tmp\GoogleCrashHandler.exe
%PROGRAM_FILES%\GUM1.tmp\GoogleUpdate.exe
%PROGRAM_FILES%\GUM1.tmp\GoogleUpdateOnDemand.exe
%PROGRAM_FILES%\GUM1.tmp\GoogleCrashHandler64.exe
%PROGRAM_FILES%\GUM1.tmp\psuser_64.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ar.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_am.dll
%PROGRAM_FILES%\GUM1.tmp\psmachine.dll
%PROGRAM_FILES%\GUM1.tmp\GoogleUpdateComRegisterShell64.exe
%PROGRAM_FILES%\GUM1.tmp\psuser.dll
%PROGRAM_FILES%\GUM1.tmp\psmachine_64.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_sr.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_sl.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_sw.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_sv.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ro.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_pt-PT.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_sk.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ru.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ta.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_vi.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ur.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_zh-TW.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_zh-CN.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_th.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_te.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_uk.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_tr.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_pt-BR.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_iw.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_it.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_kn.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ja.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_hu.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_hr.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_is.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_id.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ko.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_nl.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ms.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_pl.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_no.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_lv.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_lt.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_mr.dll
%PROGRAM_FILES%\GUM1.tmp\goopdateres_ml.dll

Network activity:

Connects to:

'74.##5.232.51':443
'74.##5.232.51':80
'localhost':1041
'wp#d':80
'localhost':1039

TCP:

HTTP GET requests:

wp#d/wpad.dat

HTTP POST requests:

74.##5.232.51/service/update2

UDP:

DNS ASK to###.google.com
DNS ASK wp#d

Miscellaneous:

Searches for the following windows:

ClassName: 'Shell_TrayWnd' WindowName: ''

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