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Trojan.DownLoader34.56859

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.ef3996ed5162b99d\ecoo.edat
  • %WINDIR%\temp\asw.33b624b834101000\setup.def
  • %WINDIR%\temp\asw.33b624b834101000\stats.ini.tmp
  • %WINDIR%\temp\asw.33b624b834101000\avbugreport_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\avdump_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\avdump_x86_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\offertool_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\sbr_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\aswec3fcb5286943aa1.tmp
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\aswc5d0d6bfa891649b.tmp
  • %WINDIR%\temp\asw.33b624b834101000\servers.def.lkg
  • %WINDIR%\temp\asw.33b624b834101000\uat_532.dll
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw2703f192b5b3dfce.tmp
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw0c0258e572cf053d.tmp
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw721f89c941bc8eb2.tmp
  • %WINDIR%\temp\asw.33b624b834101000\uat_900.dll
  • %WINDIR%\temp\asw.33b624b834101000\program.def
  • %WINDIR%\temp\asw.33b624b834101000\part-jrog2-f.vpx
  • %WINDIR%\temp\asw.33b624b834101000\part-vps_windows-20092707.vpx
  • %WINDIR%\temp\asw.33b624b834101000\vps.def
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\gcapi_16013418271344.dll
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\gcapi_16013418281232.dll
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw41f7d1f6c9742691.tmp
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw2d649f438cc3a257.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.4ace072f-aac6-447d-9d5f-e41121a002fe
  • %WINDIR%\temp\asw.33b624b834101000\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.b47fa997-d296-4481-a58f-0db1317e89e4
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.33b624b834101000\servers.def
  • %WINDIR%\temp\asw.33b624b834101000\config.def
  • %WINDIR%\temp\asw.33b624b834101000\config.def.vpx
  • %WINDIR%\temp\asw.33b624b834101000\instup.exe
  • %WINDIR%\temp\asw.33b624b834101000\instcont_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\instup.dll
  • %WINDIR%\temp\asw.33b624b834101000\instup_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\part-jrog2-69d.vpx
  • %WINDIR%\temp\asw.ef3996ed5162b99d\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.33b624b834101000\part-prg_ais-14070979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\part-vps_windows-20090100.vpx
  • %WINDIR%\temp\asw.33b624b834101000\prod-pgm.vpx
  • %WINDIR%\temp\asw.33b624b834101000\prod-vps.vpx
  • %WINDIR%\temp\asw.33b624b834101000\servers.def.vpx
  • %WINDIR%\temp\asw.33b624b834101000\htmlayout.dll
  • %WINDIR%\temp\asw.33b624b834101000\setgui_x64_ais-979.vpx
  • %WINDIR%\temp\asw.33b624b834101000\uat.vpx
  • %WINDIR%\temp\asw.33b624b834101000\uat64.vpx
  • %WINDIR%\temp\asw.33b624b834101000\uata64.vpx
  • %WINDIR%\temp\asw.33b624b834101000\config.def.new
  • %WINDIR%\temp\asw.33b624b834101000\part-setup_ais-14070979.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_1601341828812.dll
Deletes the following files
  • %WINDIR%\temp\asw.33b624b834101000\uat_532.dll
  • %WINDIR%\temp\asw.33b624b834101000\uat_900.dll
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\gcapi_16013418271344.dll
  • C:\users\public\documents\gcapi_1601341828812.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.33b624b834101000\new_14070979\gcapi_16013418281232.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.b47fa997-d296-4481-a58f-0db1317e89e4 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.ef3996ed5162b99d\ecoo.edat to %WINDIR%\temp\asw.33b624b834101000\cookie.bin
  • from %WINDIR%\temp\asw.33b624b834101000\config.def.new to %WINDIR%\temp\asw.33b624b834101000\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.4ace072f-aac6-447d-9d5f-e41121a002fe to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.33b624b834101000\stats.ini.tmp to %WINDIR%\temp\asw.33b624b834101000\stats.ini
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\aswec3fcb5286943aa1.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\avbugreport.exe
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\aswc5d0d6bfa891649b.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\avdump.exe
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw2703f192b5b3dfce.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\instup.exe
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw41f7d1f6c9742691.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\instup.dll
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw2d649f438cc3a257.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\aswoffertool.exe
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw0c0258e572cf053d.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\sbr.exe
  • from %WINDIR%\temp\asw.33b624b834101000\new_14070979\asw721f89c941bc8eb2.tmp to %WINDIR%\temp\asw.33b624b834101000\new_14070979\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.33b624b834101000\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://h4######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://h4######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-979.vpx
  • http://h4######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-979.vpx
  • http://h4######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-979.vpx
  • http://h4######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-979.vpx
  • http://h4######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-979.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://w5######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://w5######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-f.vpx
  • http://w5######.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 ia####.u.avast.com
    • DNS ASK p1######.vps18tiny.u.avcdn.net
    • DNS ASK 2.###l.ntp.org
    • DNS ASK 1.###l.ntp.org
    • DNS ASK ss#.####le-analytics.com
    • 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 w5######.vps18tiny.u.avcdn.net
    • DNS ASK s1######.vps18tiny.u.avcdn.net
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK r9######.vps18tiny.u.avcdn.net
    • DNS ASK v7#####.stats.avast.com
    • DNS ASK t1######.iavs9x.u.avast.com
    • DNS ASK go#####analytics.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK h4######.iavs9x.u.avast.com
    • DNS ASK r4######.iavs9x.u.avast.com
    • DNS ASK n2######.iavs9x.u.avast.com
    • DNS ASK l4######.iavs9x.u.avast.com
    • DNS ASK y9######.iavs9x.u.avast.com
    • DNS ASK z4######.iavs9x.u.avast.com
    • DNS ASK g1######.iavs9x.u.avast.com
    • DNS ASK p9######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK 3.###l.ntp.org
    • DNS ASK r3######.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.ef3996ed5162b99d\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_001_999_b4i_m /ga_clientid:5d96df87-515a-4c77-bff1-9058ae63c57e /edat_dir:%WINDIR%\Temp\asw.ef3996ed5162b99d
    • '%WINDIR%\temp\asw.33b624b834101000\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.33b624b834101000 /edition:1 /prod:ais /guid:f3fd13c5-994a-4600-a577-9875a9955aeb /ga_clientid:5d96df87-515a-4c77-bff1-9058ae63c57e /cookie:mmm_ava_001_99...
    • '%WINDIR%\temp\asw.33b624b834101000\new_14070979\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.33b624b834101000 /edition:1 /prod:ais /guid:f3fd13c5-994a-4600-a577-9875a9955aeb /ga_clientid:5d96df87-515a-4c77-bff1-9058ae63c57e /cookie:mmm_ava_001_999_b4i...
    • '%WINDIR%\temp\asw.33b624b834101000\new_14070979\aswoffertool.exe' -checkGToolbar -elevated
    • '%WINDIR%\temp\asw.33b624b834101000\new_14070979\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.33b624b834101000\new_14070979\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA

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    1. If the mobile device is operating normally, download and install Dr.Web for Android. Run a full system scan and follow recommendations to neutralize the detected threats.
    2. If the mobile device has been locked by Android.Locker ransomware (the message on the screen tells you that you have broken some law or demands a set ransom amount; or you will see some other announcement that prevents you from using the handheld normally), do the following:
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