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Trojan.DownLoader34.55673

Added to the Dr.Web virus database: 2020-09-27

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.ef8f01c42f4e387a\ecoo.edat
  • %WINDIR%\temp\asw.9fba6242687cfd89\setup.def
  • %WINDIR%\temp\asw.9fba6242687cfd89\stats.ini.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\avbugreport_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\avdump_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\avdump_x86_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\offertool_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\sbr_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswce2d1cf875a66cf2.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\asw2198ca8b5df8243e.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\servers.def.lkg
  • %WINDIR%\temp\asw.9fba6242687cfd89\uat_796.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswd9f4a38282427daa.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswd497eaba2fbdeea5.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswebe966d6d074d53d.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\uat_2364.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\program.def
  • %WINDIR%\temp\asw.9fba6242687cfd89\part-jrog2-e.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\part-vps_windows-20092605.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\vps.def
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\gcapi_16012540171968.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\gcapi_16012540172664.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswcc1803f2bbb6b252.tmp
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\asw174d2960530cce74.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.8c5145c1-4d8c-4d37-b02f-2c20fdb1c19d
  • %WINDIR%\temp\asw.9fba6242687cfd89\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.feec4a73-b843-4bdf-ae16-594419b0f492
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.9fba6242687cfd89\servers.def
  • %WINDIR%\temp\asw.9fba6242687cfd89\config.def
  • %WINDIR%\temp\asw.9fba6242687cfd89\config.def.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\instup.exe
  • %WINDIR%\temp\asw.9fba6242687cfd89\instcont_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\instup.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\instup_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\part-jrog2-69d.vpx
  • %WINDIR%\temp\asw.ef8f01c42f4e387a\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.9fba6242687cfd89\part-prg_ais-14070979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\part-vps_windows-20090100.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\prod-pgm.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\prod-vps.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\servers.def.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\htmlayout.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\setgui_x64_ais-979.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\uat.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\uat64.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\uata64.vpx
  • %WINDIR%\temp\asw.9fba6242687cfd89\config.def.new
  • %WINDIR%\temp\asw.9fba6242687cfd89\part-setup_ais-14070979.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_16012540182044.dll
Deletes the following files
  • %WINDIR%\temp\asw.9fba6242687cfd89\uat_796.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\uat_2364.dll
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\gcapi_16012540171968.dll
  • C:\users\public\documents\gcapi_16012540182044.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\gcapi_16012540172664.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.feec4a73-b843-4bdf-ae16-594419b0f492 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.ef8f01c42f4e387a\ecoo.edat to %WINDIR%\temp\asw.9fba6242687cfd89\cookie.bin
  • from %WINDIR%\temp\asw.9fba6242687cfd89\config.def.new to %WINDIR%\temp\asw.9fba6242687cfd89\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.8c5145c1-4d8c-4d37-b02f-2c20fdb1c19d to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.9fba6242687cfd89\stats.ini.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\stats.ini
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswce2d1cf875a66cf2.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\avbugreport.exe
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\asw2198ca8b5df8243e.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\avdump.exe
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswd9f4a38282427daa.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\instup.exe
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswcc1803f2bbb6b252.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\instup.dll
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\asw174d2960530cce74.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswoffertool.exe
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswd497eaba2fbdeea5.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\sbr.exe
  • from %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswebe966d6d074d53d.tmp to %WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.9fba6242687cfd89\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://l2######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://b7######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://b7######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-979.vpx
  • http://b7######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-979.vpx
  • http://b7######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-979.vpx
  • http://b7######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-979.vpx
  • http://b7######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-979.vpx
  • http://p9######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://g1######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://g1######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-e.vpx
  • http://g1######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20092605.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 g1######.vps18tiny.u.avcdn.net
    • DNS ASK 2.###l.ntp.org
    • DNS ASK ss#.####le-analytics.com
    • DNS ASK 1.###l.ntp.org
    • DNS ASK 0.###l.ntp.org
    • DNS ASK al#####qs.ff.avast.com
    • DNS ASK al########nse-dealer.ff.avast.com
    • DNS ASK y9######.vps18tiny.u.avcdn.net
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK r4######.vps18tiny.u.avcdn.net
    • DNS ASK r0######.vps18tiny.u.avcdn.net
    • DNS ASK p9######.iavs9x.u.avast.com
    • DNS ASK 3.###l.ntp.org
    • DNS ASK n4######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK r3######.iavs9x.u.avast.com
    • DNS ASK n2######.iavs9x.u.avast.com
    • DNS ASK m0######.iavs9x.u.avast.com
    • DNS ASK l2######.iavs9x.u.avast.com
    • DNS ASK b7######.iavs9x.u.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK ia####.u.avast.com
    • DNS ASK v7#####.stats.avast.com
    • DNS ASK z4######.iavs9x.u.avast.com
    • DNS ASK l4######.vps18tiny.u.avcdn.net
    • '1.###l.ntp.org':123
    • '2.###l.ntp.org':123
    • '0.###l.ntp.org':123
    • '3.###l.ntp.org':123
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\temp\asw.ef8f01c42f4e387a\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_001_999_e4i_m:brs_msft /ga_clientid:e68ff49f-0f87-40c9-a7a6-91d83c47b6e7 /edat_dir:%WINDIR%\Temp\asw.ef8f01c42f4e387a
    • '%WINDIR%\temp\asw.9fba6242687cfd89\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.9fba6242687cfd89 /edition:1 /prod:ais /guid:c4c0a323-3050-4ef7-87ec-47e06172ee47 /ga_clientid:e68ff49f-0f87-40c9-a7a6-91d83c47b6e7 /cookie:mmm_ava_001_99...
    • '%WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.9fba6242687cfd89 /edition:1 /prod:ais /guid:c4c0a323-3050-4ef7-87ec-47e06172ee47 /ga_clientid:e68ff49f-0f87-40c9-a7a6-91d83c47b6e7 /cookie:mmm_ava_001_999_e4i...
    • '%WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswoffertool.exe' -checkGToolbar -elevated
    • '%WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.9fba6242687cfd89\new_14070979\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA

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