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Trojan.DownLoader36.3518

Added to the Dr.Web virus database: 2020-11-22

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.1473dd0bc1b4147e\ecoo.edat
  • %WINDIR%\temp\asw.4978e26018b801e6\setup.def
  • %WINDIR%\temp\asw.4978e26018b801e6\stats.ini.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\avbugreport_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\avdump_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\avdump_x86_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\offertool_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\sbr_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\asw8031fcb31032c9e8.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\asw86bd0ff57ee798d7.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\servers.def.lkg
  • %WINDIR%\temp\asw.4978e26018b801e6\uat_2132.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswffad4a7752c85fa1.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswb0b5da0b9c789828.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswe9cae33288f395e4.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\uat_2480.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\program.def
  • %WINDIR%\temp\asw.4978e26018b801e6\part-jrog2-46.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\part-vps_windows-20112103.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\vps.def
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\gcapi_1606105277992.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\gcapi_16061052772432.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswf93d8ef934cd4292.tmp
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\asw1aac57f753f4572e.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.fb2e7c94-c374-40b0-ab5b-912b8b7c1878
  • %WINDIR%\temp\asw.4978e26018b801e6\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.caf08eb1-ce11-44b4-97df-767f6c7c9478
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.4978e26018b801e6\servers.def
  • %WINDIR%\temp\asw.4978e26018b801e6\config.def
  • %WINDIR%\temp\asw.4978e26018b801e6\config.def.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\instup.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\instup_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\part-jrog2-73a.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\part-prg_ais-14090985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\part-setup_ais-14090985.vpx
  • %WINDIR%\temp\asw.1473dd0bc1b4147e\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.4978e26018b801e6\part-vps_windows-20110904.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\prod-vps.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\servers.def.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\htmlayout.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\setgui_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\uat.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\uat64.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\uata64.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\instup.exe
  • %WINDIR%\temp\asw.4978e26018b801e6\instcont_x64_ais-985.vpx
  • %WINDIR%\temp\asw.4978e26018b801e6\config.def.new
  • %WINDIR%\temp\asw.4978e26018b801e6\prod-pgm.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_16061052781616.dll
Deletes the following files
  • %WINDIR%\temp\asw.4978e26018b801e6\uat_2132.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\uat_2480.dll
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\gcapi_1606105277992.dll
  • C:\users\public\documents\gcapi_16061052781616.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\gcapi_16061052772432.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.caf08eb1-ce11-44b4-97df-767f6c7c9478 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.1473dd0bc1b4147e\ecoo.edat to %WINDIR%\temp\asw.4978e26018b801e6\cookie.bin
  • from %WINDIR%\temp\asw.4978e26018b801e6\config.def.new to %WINDIR%\temp\asw.4978e26018b801e6\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.fb2e7c94-c374-40b0-ab5b-912b8b7c1878 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.4978e26018b801e6\stats.ini.tmp to %WINDIR%\temp\asw.4978e26018b801e6\stats.ini
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\asw8031fcb31032c9e8.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\avbugreport.exe
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\asw86bd0ff57ee798d7.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\avdump.exe
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswffad4a7752c85fa1.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\instup.exe
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswf93d8ef934cd4292.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\instup.dll
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\asw1aac57f753f4572e.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswoffertool.exe
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswb0b5da0b9c789828.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\sbr.exe
  • from %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswe9cae33288f395e4.tmp to %WINDIR%\temp\asw.4978e26018b801e6\new_14090985\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.4978e26018b801e6\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://t1######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://d3######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://d3######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-985.vpx
  • http://d3######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-985.vpx
  • http://d3######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-985.vpx
  • http://d3######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-985.vpx
  • http://d3######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-985.vpx
  • http://p9######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://t1######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://t1######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-46.vpx
  • http://t1######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20112103.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 3.###l.ntp.org
    • DNS ASK 2.###l.ntp.org
    • DNS ASK 1.###l.ntp.org
    • DNS ASK 0.###l.ntp.org
    • DNS ASK d3######.vps18tiny.u.avcdn.net
    • DNS ASK al########nse-dealer.ff.avast.com
    • DNS ASK t1######.vps18tiny.u.avcdn.net
    • DNS ASK s1######.vps18tiny.u.avcdn.net
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK l7######.vps18tiny.u.avcdn.net
    • DNS ASK l4######.vps18tiny.u.avcdn.net
    • DNS ASK y8######.iavs9x.u.avast.com
    • DNS ASK go#####analytics.com
    • DNS ASK al#####qs.ff.avast.com
    • DNS ASK t1######.iavs9x.u.avast.com
    • DNS ASK v7#####.stats.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK d3######.iavs9x.u.avast.com
    • DNS ASK r9######.iavs9x.u.avast.com
    • DNS ASK m0######.iavs9x.u.avast.com
    • DNS ASK g1######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK p9######.iavs9x.u.avast.com
    • DNS ASK f3######.iavs9x.u.avast.com
    • DNS ASK h4######.iavs9x.u.avast.com
    • DNS ASK r6######.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.1473dd0bc1b4147e\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_tst_005_262_h /ga_clientid:ddc35f6f-f01e-40e9-99ac-335e6a1c5d4f /edat_dir:%WINDIR%\Temp\asw.1473dd0bc1b4147e
    • '%WINDIR%\temp\asw.4978e26018b801e6\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.4978e26018b801e6 /edition:1 /prod:ais /guid:a157be88-ad02-474e-aa2e-e73f0b8e3b36 /ga_clientid:ddc35f6f-f01e-40e9-99ac-335e6a1c5d4f /cookie:mmm_ava_tst_00...
    • '%WINDIR%\temp\asw.4978e26018b801e6\new_14090985\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.4978e26018b801e6 /edition:1 /prod:ais /guid:a157be88-ad02-474e-aa2e-e73f0b8e3b36 /ga_clientid:ddc35f6f-f01e-40e9-99ac-335e6a1c5d4f /cookie:mmm_ava_tst_005_262...
    • '%WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswoffertool.exe' -checkGToolbar -elevated
    • '%WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.4978e26018b801e6\new_14090985\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA

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