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Trojan.DownLoader35.9906

Added to the Dr.Web virus database: 2020-10-30

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.a01bf58fb9585d5f\ecoo.edat
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\setup.def
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\stats.ini.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\avbugreport_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\avdump_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\avdump_x86_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\offertool_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\sbr_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw6527790eb2d69370.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswc2dd165d1bf65aed.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\servers.def.lkg
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uat_2836.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw426f068a9e3f6226.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw2ee716afa4f2cf23.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswd0f54cd9275481ea.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uat_1712.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\program.def
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\part-jrog2-2f.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\part-vps_windows-20102905.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\vps.def
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\gcapi_1604113701676.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\gcapi_16041137011032.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw7c75a6fb6a7c2b65.tmp
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw5fadfd5c81a49a5f.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.d539e916-5553-4696-bf27-e82f405ecbc0
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.bf5f7a1e-97ed-4a68-975e-1cc874dcd768
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\servers.def
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\config.def
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\config.def.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\instup.exe
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\instcont_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\instup.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\instup_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\part-jrog2-6e9.vpx
  • %WINDIR%\temp\asw.a01bf58fb9585d5f\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\part-prg_ais-14080980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\part-vps_windows-20100602.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\prod-pgm.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\prod-vps.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\servers.def.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uat.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uat64.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uata64.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\htmlayout.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\setgui_x64_ais-980.vpx
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\config.def.new
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\part-setup_ais-14080980.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_1604113703268.dll
Deletes the following files
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uat_2836.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\uat_1712.dll
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\gcapi_1604113701676.dll
  • C:\users\public\documents\gcapi_1604113703268.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\gcapi_16041137011032.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.bf5f7a1e-97ed-4a68-975e-1cc874dcd768 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.a01bf58fb9585d5f\ecoo.edat to %WINDIR%\temp\asw.3b708da0a6fd9b07\cookie.bin
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\config.def.new to %WINDIR%\temp\asw.3b708da0a6fd9b07\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.d539e916-5553-4696-bf27-e82f405ecbc0 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\stats.ini.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\stats.ini
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw6527790eb2d69370.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\avbugreport.exe
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswc2dd165d1bf65aed.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\avdump.exe
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw426f068a9e3f6226.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\instup.exe
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw7c75a6fb6a7c2b65.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\instup.dll
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw5fadfd5c81a49a5f.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswoffertool.exe
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\asw2ee716afa4f2cf23.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\sbr.exe
  • from %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswd0f54cd9275481ea.tmp to %WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.3b708da0a6fd9b07\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://d3######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-980.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-980.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-980.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-980.vpx
  • http://g1######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-980.vpx
  • http://n4######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://n8######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://n8######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-2f.vpx
  • http://n8######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20102905.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 b8######.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 t1######.vps18tiny.u.avcdn.net
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK n8######.vps18tiny.u.avcdn.net
    • DNS ASK h4######.vps18tiny.u.avcdn.net
    • DNS ASK d3######.vps18tiny.u.avcdn.net
    • DNS ASK 3.###l.ntp.org
    • DNS ASK ia####.u.avast.com
    • DNS ASK t1######.iavs9x.u.avast.com
    • DNS ASK v7#####.stats.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK r9######.iavs9x.u.avast.com
    • DNS ASK d3######.iavs9x.u.avast.com
    • DNS ASK c3######.iavs9x.u.avast.com
    • DNS ASK r0######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK y9######.iavs9x.u.avast.com
    • DNS ASK l4######.iavs9x.u.avast.com
    • DNS ASK n4######.iavs9x.u.avast.com
    • DNS ASK g1######.iavs9x.u.avast.com
    • DNS ASK ss#.####le-analytics.com
    • DNS ASK n8######.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.a01bf58fb9585d5f\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_003_999_a4i_m /ga_clientid:1f33e710-0c02-44f7-a1cf-77d1dba4e709 /edat_dir:%WINDIR%\Temp\asw.a01bf58fb9585d5f
    • '%WINDIR%\temp\asw.3b708da0a6fd9b07\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.3b708da0a6fd9b07 /edition:1 /prod:ais /guid:e016fe83-8460-4585-bab8-a459fa95036a /ga_clientid:1f33e710-0c02-44f7-a1cf-77d1dba4e709 /cookie:mmm_ava_003_99...
    • '%WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.3b708da0a6fd9b07 /edition:1 /prod:ais /guid:e016fe83-8460-4585-bab8-a459fa95036a /ga_clientid:1f33e710-0c02-44f7-a1cf-77d1dba4e709 /cookie:mmm_ava_003_999_a4i...
    • '%WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA
    • '%WINDIR%\temp\asw.3b708da0a6fd9b07\new_14080980\aswoffertool.exe' -checkGToolbar -elevated

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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.
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