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Trojan.DownLoader34.37525

Added to the Dr.Web virus database: 2020-09-10

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.7817b6faeebb200d\ecoo.edat
  • %WINDIR%\temp\asw.ab9091cf0465ace3\setup.def
  • %WINDIR%\temp\asw.ab9091cf0465ace3\stats.ini.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\avbugreport_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\avdump_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\avdump_x86_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\offertool_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\sbr_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswc64f08f0296cfea5.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\asw6dec6564be89a68b.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\servers.def.lkg
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uat_2744.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswf71557bd65db8834.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswdcbeb96935b27fad.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\asw0284ba9c7cdfe070.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uat_3036.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\program.def
  • %WINDIR%\temp\asw.ab9091cf0465ace3\part-jrog2-f7.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\part-vps_windows-20090803.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\vps.def
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\gcapi_15996990252728.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\gcapi_15996990251044.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswbe3dc0acbcb3444b.tmp
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\asw09b1ee1d984ff87a.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.d126473f-796d-4d76-9ef6-ab154d06ddc3
  • %WINDIR%\temp\asw.ab9091cf0465ace3\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.bedc375b-58da-45f3-861d-b10a3cab04df
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.ab9091cf0465ace3\servers.def
  • %WINDIR%\temp\asw.ab9091cf0465ace3\config.def
  • %WINDIR%\temp\asw.ab9091cf0465ace3\instup.exe
  • %WINDIR%\temp\asw.ab9091cf0465ace3\instcont_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\instup.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\instup_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\part-prg_ais-14070979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\part-jrog2-69d.vpx
  • %WINDIR%\temp\asw.7817b6faeebb200d\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.ab9091cf0465ace3\config.def.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\prod-vps.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\part-vps_windows-20090100.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\prod-pgm.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\servers.def.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\htmlayout.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uat.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uat64.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uata64.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\setgui_x64_ais-979.vpx
  • %WINDIR%\temp\asw.ab9091cf0465ace3\config.def.new
  • %WINDIR%\temp\asw.ab9091cf0465ace3\part-setup_ais-14070979.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_15996990261068.dll
Deletes the following files
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uat_2744.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\uat_3036.dll
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\gcapi_15996990252728.dll
  • C:\users\public\documents\gcapi_15996990261068.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\gcapi_15996990251044.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.bedc375b-58da-45f3-861d-b10a3cab04df to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.7817b6faeebb200d\ecoo.edat to %WINDIR%\temp\asw.ab9091cf0465ace3\cookie.bin
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\config.def.new to %WINDIR%\temp\asw.ab9091cf0465ace3\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.d126473f-796d-4d76-9ef6-ab154d06ddc3 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\stats.ini.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\stats.ini
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswc64f08f0296cfea5.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\avbugreport.exe
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\asw6dec6564be89a68b.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\avdump.exe
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswf71557bd65db8834.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\instup.exe
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswbe3dc0acbcb3444b.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\instup.dll
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\asw09b1ee1d984ff87a.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswoffertool.exe
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswdcbeb96935b27fad.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\sbr.exe
  • from %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\asw0284ba9c7cdfe070.tmp to %WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.ab9091cf0465ace3\config.def.new
Network activity
TCP
HTTP GET requests
  • http://ia####.u.avast.com/iavs9x/avast_free_antivirus_setup_online_x64.exe
  • http://www.go#####analytics.com/collect?ai#######################################################################################################################################################...
  • http://h4######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://r9######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://r9######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-979.vpx
  • http://r9######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-979.vpx
  • http://r9######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-979.vpx
  • http://r9######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-979.vpx
  • http://r9######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-979.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://n2######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://n2######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-f7.vpx
  • http://n2######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20090803.vpx
HTTP POST requests
  • http://www.go#####analytics.com/collect
  • http://v7#####.stats.avast.com/cgi-bin/iavsevents.cgi
  • 'v7#####.stats.avast.com':443
  • 'sh#####d.ff.avast.com':443
  • 'al########nse-dealer.ff.avast.com':443
  • 'al#####qs.ff.avast.com':443
  • 'ss#.####le-analytics.com':443
    • UDP
    • DNS ASK go#####analytics.com
    • DNS ASK 3.###l.ntp.org
    • DNS ASK 2.###l.ntp.org
    • DNS ASK 1.###l.ntp.org
    • DNS ASK 0.###l.ntp.org
    • DNS ASK g1######.vps18tiny.u.avcdn.net
    • DNS ASK al########nse-dealer.ff.avast.com
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK n4######.vps18tiny.u.avcdn.net
    • DNS ASK n2######.vps18tiny.u.avcdn.net
    • DNS ASK l7######.vps18tiny.u.avcdn.net
    • DNS ASK l4######.vps18tiny.u.avcdn.net
    • DNS ASK y9######.iavs9x.u.avast.com
    • DNS ASK ia####.u.avast.com
    • DNS ASK al#####qs.ff.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK v7#####.stats.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK c3######.iavs9x.u.avast.com
    • DNS ASK n8######.iavs9x.u.avast.com
    • DNS ASK h4######.iavs9x.u.avast.com
    • DNS ASK d3######.iavs9x.u.avast.com
    • DNS ASK r9######.iavs9x.u.avast.com
    • DNS ASK l7######.iavs9x.u.avast.com
    • DNS ASK g1######.iavs9x.u.avast.com
    • DNS ASK j0######.iavs9x.u.avast.com
    • DNS ASK m0######.iavs9x.u.avast.com
    • DNS ASK ss#.####le-analytics.com
    • '2.###l.ntp.org':123
    • '0.###l.ntp.org':123
    • '1.###l.ntp.org':123
    • '3.###l.ntp.org':123
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\temp\asw.7817b6faeebb200d\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_tst_004_613_e /ga_clientid:95da8c7e-72e2-46b6-8af6-e284555c6bcd /edat_dir:%WINDIR%\Temp\asw.7817b6faeebb200d
    • '%WINDIR%\temp\asw.ab9091cf0465ace3\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.ab9091cf0465ace3 /edition:1 /prod:ais /guid:b3e1d7ad-c2ef-409b-adb1-f71ef78a3964 /ga_clientid:95da8c7e-72e2-46b6-8af6-e284555c6bcd /cookie:mmm_ava_tst_00...
    • '%WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.ab9091cf0465ace3 /edition:1 /prod:ais /guid:b3e1d7ad-c2ef-409b-adb1-f71ef78a3964 /ga_clientid:95da8c7e-72e2-46b6-8af6-e284555c6bcd /cookie:mmm_ava_tst_004_613...
    • '%WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA
    • '%WINDIR%\temp\asw.ab9091cf0465ace3\new_14070979\aswoffertool.exe' -checkGToolbar -elevated

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