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Trojan.DownLoader36.26732

Added to the Dr.Web virus database: 2020-12-06

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.b54f6b1ad5ab4317\ecoo.edat
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\setup.def
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\stats.ini.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\avbugreport_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\avdump_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\avdump_x86_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\offertool_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\sbr_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw97efad9ddd18308d.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw1eee5e3d3e4a357a.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\servers.def.lkg
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uat_1636.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw7530a554e53a0286.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw4d4298873343c611.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswc4dc754fc4502ab7.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uat_2604.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\program.def
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\part-jrog2-57.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\part-vps_windows-20120405.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\vps.def
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\gcapi_16072136842816.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\gcapi_16072136852972.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw599a123e04c96c86.tmp
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswe75db929a43487f4.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.e9ed971c-bab2-45a9-b696-89ff1de0d7f1
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.4bc96c1a-17e3-4c0d-82e5-3b93a8289a29
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\servers.def
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\config.def
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\instup.exe
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\instcont_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\instup.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\instup_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\part-jrog2-73a.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\part-prg_ais-14090985.vpx
  • %WINDIR%\temp\asw.b54f6b1ad5ab4317\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\part-setup_ais-14090985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\config.def.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\prod-vps.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\servers.def.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\htmlayout.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uat.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\setgui_x64_ais-985.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uat64.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uata64.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\prod-pgm.vpx
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\config.def.new
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\part-vps_windows-20110904.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_16072136862724.dll
Deletes the following files
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uat_1636.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\uat_2604.dll
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\gcapi_16072136842816.dll
  • C:\users\public\documents\gcapi_16072136862724.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\gcapi_16072136852972.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.4bc96c1a-17e3-4c0d-82e5-3b93a8289a29 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.b54f6b1ad5ab4317\ecoo.edat to %WINDIR%\temp\asw.876fc97aa3f6bb56\cookie.bin
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\config.def.new to %WINDIR%\temp\asw.876fc97aa3f6bb56\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.e9ed971c-bab2-45a9-b696-89ff1de0d7f1 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\stats.ini.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\stats.ini
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw97efad9ddd18308d.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\avbugreport.exe
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw1eee5e3d3e4a357a.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\avdump.exe
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw7530a554e53a0286.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\instup.exe
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw599a123e04c96c86.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\instup.dll
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswe75db929a43487f4.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswoffertool.exe
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\asw4d4298873343c611.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\sbr.exe
  • from %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswc4dc754fc4502ab7.tmp to %WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.876fc97aa3f6bb56\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://n8######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://r4######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://r4######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-985.vpx
  • http://r4######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-985.vpx
  • http://r4######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-985.vpx
  • http://r4######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-985.vpx
  • http://r4######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-985.vpx
  • http://l2######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://n2######.vps18tiny.u.avcdn.net/vps18tiny/prod-vps.vpx
  • http://n2######.vps18tiny.u.avcdn.net/vps18tiny/part-jrog2-57.vpx
  • http://n2######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20120405.vpx
HTTP POST requests
  • http://www.go#####analytics.com/collect
  • http://v7#####.stats.avast.com/cgi-bin/iavsevents.cgi
  • 'ia####.u.avast.com':443
  • '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 v7#####.stats.avast.com
    • DNS ASK j0######.vps18tiny.u.avcdn.net
    • 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 al#####qs.ff.avast.com
    • DNS ASK al########nse-dealer.ff.avast.com
    • DNS ASK y8######.vps18tiny.u.avcdn.net
    • DNS ASK s-#####tiny.avcdn.net
    • DNS ASK r3######.vps18tiny.u.avcdn.net
    • DNS ASK n2######.vps18tiny.u.avcdn.net
    • DNS ASK go#####analytics.com
    • DNS ASK g1######.vps18tiny.u.avcdn.net
    • DNS ASK ia####.u.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK z4######.iavs9x.u.avast.com
    • DNS ASK n2######.iavs9x.u.avast.com
    • DNS ASK l4######.iavs9x.u.avast.com
    • DNS ASK p1######.iavs9x.u.avast.com
    • DNS ASK r4######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK l2######.iavs9x.u.avast.com
    • DNS ASK n8######.iavs9x.u.avast.com
    • DNS ASK ss#.####le-analytics.com
    • DNS ASK r6######.iavs9x.u.avast.com
    • '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.b54f6b1ad5ab4317\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_003_999_a4l_m /ga_clientid:935a5dcc-f23a-415c-a779-ef71f2b2b87f /edat_dir:%WINDIR%\Temp\asw.b54f6b1ad5ab4317
    • '%WINDIR%\temp\asw.876fc97aa3f6bb56\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.876fc97aa3f6bb56 /edition:1 /prod:ais /guid:c55c3c64-e96a-4851-a8cb-b37b3750bb79 /ga_clientid:935a5dcc-f23a-415c-a779-ef71f2b2b87f /cookie:mmm_ava_003_99...
    • '%WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.876fc97aa3f6bb56 /edition:1 /prod:ais /guid:c55c3c64-e96a-4851-a8cb-b37b3750bb79 /ga_clientid:935a5dcc-f23a-415c-a779-ef71f2b2b87f /cookie:mmm_ava_003_999_a4l...
    • '%WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswoffertool.exe' -checkGToolbar -elevated
    • '%WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.876fc97aa3f6bb56\new_14090985\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA

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