Technical Information
To ensure autorun and distribution
Creates or modifies the following files
- <SYSTEM32>\tasks\googleupdatetaskmachinecore{446fca46-800d-400b-84d2-684f8106a284}
- <SYSTEM32>\tasks\googleupdatetaskmachineua{336a679e-f2fc-4b55-b239-bb3690a0b07e}
Sets the following service settings
- [HKLM\System\CurrentControlSet\Services\DLKcsf AeCMo] 'Start' = '00000002'
- [HKLM\System\CurrentControlSet\Services\DLKcsf AeCMo] 'ImagePath' = '<SYSTEM32>\VkfOaAV.exe Service 1'
- [HKLM\System\CurrentControlSet\Services\gupdate] 'Start' = '00000002'
- [HKLM\System\CurrentControlSet\Services\gupdate] 'ImagePath' = '"%ProgramFiles(x86)%\Google\Update\GoogleUpdate.exe" /svc'
- [HKLM\System\CurrentControlSet\Services\gupdatem] 'ImagePath' = '"%ProgramFiles(x86)%\Google\Update\GoogleUpdate.exe" /medsvc'
Creates the following services
- 'DLKcsf AeCMo' <SYSTEM32>\VkfOaAV.exe Service 1
- 'gupdate' "%ProgramFiles(x86)%\Google\Update\GoogleUpdate.exe" /svc
- 'gupdatem' "%ProgramFiles(x86)%\Google\Update\GoogleUpdate.exe" /medsvc
Malicious functions
Terminates or attempts to terminate
the following system processes:
- %WINDIR%\syswow64\vkfoaav.exe
Modifies file system
Creates the following files
- %WINDIR%\vkfoaav.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_fr.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_gu.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_hi.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_hr.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_hu.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_fi.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_fil.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_id.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_iw.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ja.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_kn.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ko.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_lt.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_is.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_it.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_fa.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_et.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_es-419.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\googlecrashhandler64.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\googleupdatecomregistershell64.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_am.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ar.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_bg.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_bn.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\googlecrashhandler.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ca.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_da.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_de.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_el.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_en.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_en-gb.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_es.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_cs.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_lv.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_mr.dll
- %TEMP%\bitf0d.tmp
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ms.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_zh-tw.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\psuser.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\psuser_64.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\psmachine.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\psmachine_64.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_vi.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_zh-cn.dll
- %ProgramFiles(x86)%\google\update\googleupdate.exe
- nul
- %WINDIR%\temp\cabe83e.tmp
- %WINDIR%\temp\tare83f.tmp
- %WINDIR%\temp\cabfebc.tmp
- %WINDIR%\temp\tarfebd.tmp
- %ProgramFiles(x86)%\google\update\1.3.36.342\googleupdatebroker.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\googleupdateondemand.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ur.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_uk.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_tr.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_no.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_pl.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_pt-br.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_pt-pt.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ro.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ru.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_nl.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_sk.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_sr.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_sv.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_sw.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ta.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_te.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_th.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_sl.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\googleupdatecore.exe
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdateres_ml.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\goopdate.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_hi.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_cs.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_da.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_de.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_el.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_en.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_bn.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ca.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_en-gb.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_et.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_fa.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_fi.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_fil.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_fr.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_es.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_es-419.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_bg.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ar.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_am.dll
- %WINDIR%\chromesetup.exe
- %ProgramFiles(x86)%\google\temp\gutdd46.tmp
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdate.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googlecrashhandler.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdate.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdatebroker.exe
- %WINDIR%\syswow64\vkfoaav.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdateondemand.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\psmachine.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\psmachine_64.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\psuser.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\psuser_64.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googlecrashhandler64.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdatecore.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdatecomregistershell64.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_gu.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_hr.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdatesetup.exe
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_hu.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_sl.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_sr.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_sv.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_sw.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ta.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ru.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_sk.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_te.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_uk.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ur.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_vi.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_zh-cn.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_zh-tw.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_th.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_tr.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ro.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_pt-pt.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_pt-br.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_is.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_it.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_iw.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ja.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_kn.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ko.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_id.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_lt.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ml.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_mr.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_ms.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_nl.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_no.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_pl.dll
- %ProgramFiles(x86)%\google\temp\gumdd45.tmp\goopdateres_lv.dll
- %ProgramFiles(x86)%\google\update\1.3.36.342\googleupdate.exe
- %ProgramFiles%\google\chrome\temp\source564_1342225203\chrome.7z
Sets the 'hidden' attribute to the following files
- %TEMP%\bitf0d.tmp
Deletes the following files
- %TEMP%\_@e1d6.tmp
- %WINDIR%\temp\cabe83e.tmp
- %WINDIR%\temp\tare83f.tmp
- %WINDIR%\temp\cabfebc.tmp
- %WINDIR%\temp\tarfebd.tmp
- %TEMP%\{2c25310d-7b52-456e-b847-45764b52310e}-109.0.5414.120_chrome_installer.exe
Moves the following files
- from %WINDIR%\vkfoaav.exe to %TEMP%\_@e1d6.tmp
- from %TEMP%\bitf0d.tmp to %TEMP%\{2c25310d-7b52-456e-b847-45764b52310e}-109.0.5414.120_chrome_installer.exe
Moves itself
- from <Full path to file> to %TEMP%\_@e36b.tmp
Network activity
Connects to
- '38.##1.21.34':2022
- 'dl.google.com':443
- 'up####.googleapis.com':443
- 'pk#.goog':80
- 'ed####.me.gvt1.com':80
TCP
HTTP GET requests
- http://pk#.goog/gsr1/gsr1.crt
- http://ed####.me.gvt1.com/edgedl/release2/chrome/czao2hrvpk5wgqrkz4kks5r734_109.0.5414.120/109.0.5414.120_chrome_installer.exe
Other
- '38.##1.21.34':2022
- 'dl.google.com':443
- 'up####.googleapis.com':443
UDP
- DNS ASK dl.google.com
- DNS ASK up####.googleapis.com
- DNS ASK pk#.goog
- DNS ASK ed####.me.gvt1.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\vkfoaav.exe'
- '%WINDIR%\chromesetup.exe'
- '%ProgramFiles(x86)%\google\temp\gumdd45.tmp\googleupdate.exe' /installsource taggedmi /install "appguid={8A69D345-D564-463C-AFF1-A69D9E530F96}&iid={93D19599-0626-757C-805D-BBBE09121B4F}&lang=zh-CN&browser=4&usagestats=1&appname=Google%20Chrome&needsadmin=...
- '%WINDIR%\syswow64\vkfoaav.exe' -auto
- '%WINDIR%\syswow64\vkfoaav.exe' Service 1
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /regsvc
- '%WINDIR%\syswow64\vkfoaav.exe' -a1
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /regserver
- '%ProgramFiles(x86)%\google\update\1.3.36.342\googleupdatecomregistershell64.exe'
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /ping PD94bWwgdmVyc2lvbj0iMS4wIiBlbmNvZGluZz0iVVRGLTgiPz48cmVxdWVzdCBwcm90b2NvbD0iMy4wIiB1cGRhdGVyPSJPbWFoYSIgdXBkYXRlcnZlcnNpb249IjEuMy4zNi4zNDIiIHNoZWxsX3ZlcnNpb249IjEuMy4zNi4zNDEiIGlzbWFjaGl...
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /handoff "appguid={8A69D345-D564-463C-AFF1-A69D9E530F96}&iid={93D19599-0626-757C-805D-BBBE09121B4F}&lang=zh-CN&browser=4&usagestats=1&appname=Google%20Chrome&needsadmin=prefers&ap=x64-stable-st...
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /svc
- '%WINDIR%\syswow64\cmd.exe' cmd/c ping -n 2 127.0.0.1 > nul && del %TEMP%\_@E1D6.tmp > nul' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\cmd.exe' cmd/c ping -n 2 127.0.0.1 > nul && del %TEMP%\_@E1D6.tmp > nul
- '%WINDIR%\syswow64\ping.exe' -n 2 127.0.0.1
