Technical Information
Malicious functions
Terminates or attempts to terminate
the following user processes:
- firefox.exe
Searches for windows to
detect analytical utilities:
- ClassName: 'OLLYDBG', WindowName: ''
- ClassName: 'GBDYLLO', WindowName: ''
- ClassName: 'pediy06', WindowName: ''
- 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
- %ProgramFiles(x86)%\mozilla firefox\zlib1.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_no.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_nl.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ms.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_mr.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ml.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_lv.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_lt.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_pl.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ko.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ja.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_iw.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_it.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_is.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_id.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_hu.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_hr.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_kn.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_te.dll
- %ProgramFiles(x86)%\guma853.tmp\offlinemanifest.gup
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ro.dll
- %ProgramFiles(x86)%\guma853.tmp\75.0.3770.142_chrome_installer.exe.{8a69d345-d564-463c-aff1-a69d9e530f96}
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_zh-tw.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_zh-cn.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_vi.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ur.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_uk.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_tr.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_hi.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_th.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ta.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_sw.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_sv.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_sr.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_sl.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_sk.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ru.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_pt-br.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_pt-pt.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_gu.dll
- %ProgramFiles(x86)%\guma853.tmp\googlecrashhandler64.exe
- %ProgramFiles(x86)%\guma853.tmp\psmachine_64.dll
- %ProgramFiles(x86)%\guma853.tmp\psmachine.dll
- %ProgramFiles(x86)%\guma853.tmp\googleupdatewebplugin.exe
- %ProgramFiles(x86)%\guma853.tmp\googleupdatecomregistershell64.exe
- %ProgramFiles(x86)%\guma853.tmp\googleupdateondemand.exe
- %ProgramFiles(x86)%\guma853.tmp\googleupdatebroker.exe
- %ProgramFiles(x86)%\guma853.tmp\googleupdatehelper.msi
- %ProgramFiles(x86)%\guma853.tmp\psuser.dll
- %ProgramFiles(x86)%\guma853.tmp\npgoogleupdate3.dll
- %ProgramFiles(x86)%\guma853.tmp\googlecrashhandler.exe
- %ProgramFiles(x86)%\guma853.tmp\googleupdate.exe
- %ProgramFiles(x86)%\guta854.tmp
- %WINDIR%\installer\{af27bab7-c3f2-4246-8d9f-7b27f25a7a7d}\{e08d0fb1-252d-4387-a701-afc9bd885e96}.xpi
- %APPDATA%\mozilla\firefox\profiles\gn7ryp3k.default\crashes
- %APPDATA%\mozilla\firefox\profiles\gn7ryp3k.default\minidumps
- %APPDATA%\mozilla\firefox\profiles\gn7ryp3k.default\datareporting
- %ProgramFiles(x86)%\guma853.tmp\goopdate.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_de.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_fil.dll
- %ProgramFiles(x86)%\guma853.tmp\googleupdatecore.exe
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_fi.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_fa.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_et.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_es-419.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_es.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_en-gb.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_en.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_fr.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_el.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_da.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_cs.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ca.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_bn.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_bg.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_ar.dll
- %ProgramFiles(x86)%\guma853.tmp\goopdateres_am.dll
- %ProgramFiles(x86)%\guma853.tmp\psuser_64.dll
- %ProgramFiles(x86)%\guma853.tmp\googleupdatesetup.exe
Substitutes the following files
- %APPDATA%\Mozilla\Firefox\Profiles\gn7ryp3k.default\user.js
- %APPDATA%\Mozilla\Firefox\Profiles\gn7ryp3k.default\secmod.db
- %APPDATA%\Mozilla\Firefox\Profiles\gn7ryp3k.default\healthreport.sqlite
Network activity
TCP
- 'up.##pixel.com':443
UDP
- DNS ASK up.##pixel.com
Miscellaneous
Searches for the following windows
- ClassName: '18467-41' WindowName: ''
Creates and executes the following
- '%WINDIR%\installer\msi9b67.tmp' /silent /install "appguid={8A69D345-D564-463c-AFF1-A69D9E530F96}&appname=Google Chrome&needsAdmin=True"&brand=GCEA&ap=x64-stable"" /installsource enterprisemsi /appargs "appguid={8A69D345-D564-...
- '%ProgramFiles(x86)%\guma853.tmp\googleupdate.exe' /silent /install "appguid={8A69D345-D564-463c-AFF1-A69D9E530F96}&appname=Google Chrome&needsAdmin=True"&brand=GCEA&ap=x64-stable"" /installsource enterprisemsi /appargs "appguid={8A69D345-D564-...
- '%WINDIR%\syswow64\sc.exe' config MozillaMaintenance start= disabled' (with hidden window)
- '%WINDIR%\syswow64\sc.exe' stop MozillaMaintenance' (with hidden window)
- '%WINDIR%\syswow64\msiexec.exe' /i "%LOCALAPPDATA%\Microsoft\Windows\<INETFILES>\Content.IE5\CAASBYCL\googlechromestandaloneenterprise64[1].msi" /quiet' (with hidden window)
Executes the following
- '%WINDIR%\syswow64\sc.exe' config MozillaMaintenance start= disabled
- '%WINDIR%\syswow64\sc.exe' stop MozillaMaintenance
- '%WINDIR%\syswow64\msiexec.exe' /i "%LOCALAPPDATA%\Microsoft\Windows\<INETFILES>\Content.IE5\CAASBYCL\googlechromestandaloneenterprise64[1].msi" /quiet
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /regsvc
- '%ProgramFiles(x86)%\google\update\googleupdate.exe' /regserver
