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Trojan.DownLoader34.56874

Added to the Dr.Web virus database: 2020-09-29

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.6f10759f20246ea3\ecoo.edat
  • %WINDIR%\temp\asw.2c4047c8547bcf71\setup.def
  • %WINDIR%\temp\asw.2c4047c8547bcf71\stats.ini.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\avbugreport_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\avdump_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\avdump_x86_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\offertool_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\sbr_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw64a8a4f791899a4e.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw6155310c7464ad84.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\servers.def.lkg
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uat_1200.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw894f3c4c791d7d5a.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw07c03a59602088e0.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\aswb75b24d770c86386.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uat_3048.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\program.def
  • %WINDIR%\temp\asw.2c4047c8547bcf71\part-jrog2-f.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\part-vps_windows-20092707.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\vps.def
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\gcapi_16013230952456.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\gcapi_16013230952656.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw4863600a14e6b218.tmp
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw83d0ef5d1943a725.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.027df798-a3fa-4d1e-8215-732fe89804f9
  • %WINDIR%\temp\asw.2c4047c8547bcf71\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.ec0d0af3-0406-4cbd-ae7e-36743f69a364
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.2c4047c8547bcf71\servers.def
  • %WINDIR%\temp\asw.2c4047c8547bcf71\config.def
  • %WINDIR%\temp\asw.2c4047c8547bcf71\config.def.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\instup.exe
  • %WINDIR%\temp\asw.2c4047c8547bcf71\instcont_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\instup.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\instup_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\part-jrog2-69d.vpx
  • %WINDIR%\temp\asw.6f10759f20246ea3\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.2c4047c8547bcf71\part-prg_ais-14070979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\part-vps_windows-20090100.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\prod-pgm.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\servers.def.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\htmlayout.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\setgui_x64_ais-979.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uat.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\prod-vps.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uat64.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uata64.vpx
  • %WINDIR%\temp\asw.2c4047c8547bcf71\config.def.new
  • %WINDIR%\temp\asw.2c4047c8547bcf71\part-setup_ais-14070979.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_16013230962116.dll
Deletes the following files
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uat_1200.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\uat_3048.dll
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\gcapi_16013230952456.dll
  • C:\users\public\documents\gcapi_16013230962116.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\gcapi_16013230952656.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.ec0d0af3-0406-4cbd-ae7e-36743f69a364 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.6f10759f20246ea3\ecoo.edat to %WINDIR%\temp\asw.2c4047c8547bcf71\cookie.bin
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\config.def.new to %WINDIR%\temp\asw.2c4047c8547bcf71\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.027df798-a3fa-4d1e-8215-732fe89804f9 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\stats.ini.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\stats.ini
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw64a8a4f791899a4e.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\avbugreport.exe
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw6155310c7464ad84.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\avdump.exe
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw894f3c4c791d7d5a.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\instup.exe
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw4863600a14e6b218.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\instup.dll
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw83d0ef5d1943a725.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\aswoffertool.exe
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\asw07c03a59602088e0.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\sbr.exe
  • from %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\aswb75b24d770c86386.tmp to %WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.2c4047c8547bcf71\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://r6######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://r6######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://r6######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-979.vpx
  • http://r6######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-979.vpx
  • http://r6######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-979.vpx
  • http://r6######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-979.vpx
  • http://r6######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-979.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://j0######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://j0######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-f.vpx
  • http://j0######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20092707.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 b7######.vps18tiny.u.avcdn.net
    • DNS ASK 2.###l.ntp.org
    • 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 z4######.vps18tiny.u.avcdn.net
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK n8######.vps18tiny.u.avcdn.net
    • DNS ASK j0######.vps18tiny.u.avcdn.net
    • DNS ASK d3######.vps18tiny.u.avcdn.net
    • DNS ASK 3.###l.ntp.org
    • DNS ASK r3######.iavs9x.u.avast.com
    • DNS ASK b8######.iavs9x.u.avast.com
    • DNS ASK w5######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK r6######.iavs9x.u.avast.com
    • DNS ASK n8######.iavs9x.u.avast.com
    • DNS ASK l4######.iavs9x.u.avast.com
    • DNS ASK h4######.iavs9x.u.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK v7#####.stats.avast.com
    • DNS ASK ia####.u.avast.com
    • DNS ASK n2######.iavs9x.u.avast.com
    • DNS ASK ss#.####le-analytics.com
    • DNS ASK j0######.iavs9x.u.avast.com
    • '0.###l.ntp.org':123
    • '1.###l.ntp.org':123
    • '2.###l.ntp.org':123
    Miscellaneous
    Creates and executes the following
    • '%WINDIR%\temp\asw.6f10759f20246ea3\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_bxk_dlp_000_119_a /ga_clientid:d54ff7ad-90db-477c-a91e-439b8f2cd1c3 /edat_dir:%WINDIR%\Temp\asw.6f10759f20246ea3
    • '%WINDIR%\temp\asw.2c4047c8547bcf71\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.2c4047c8547bcf71 /edition:1 /prod:ais /guid:d0b0bedb-2df9-44ca-ac2f-3c10502b7ea8 /ga_clientid:d54ff7ad-90db-477c-a91e-439b8f2cd1c3 /cookie:mmm_bxk_dlp_00...
    • '%WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.2c4047c8547bcf71 /edition:1 /prod:ais /guid:d0b0bedb-2df9-44ca-ac2f-3c10502b7ea8 /ga_clientid:d54ff7ad-90db-477c-a91e-439b8f2cd1c3 /cookie:mmm_bxk_dlp_000_119...
    • '%WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\aswoffertool.exe' -checkGToolbar -elevated
    • '%WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.2c4047c8547bcf71\new_14070979\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA

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