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Trojan.DownLoader36.26243

Added to the Dr.Web virus database: 2020-12-04

Virus description added:

Technical Information

Modifies file system
Creates the following files
  • %WINDIR%\temp\asw.48875e96bcc3d423\ecoo.edat
  • %WINDIR%\temp\asw.0a4a556de0e63004\setup.def
  • %WINDIR%\temp\asw.0a4a556de0e63004\stats.ini.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\avbugreport_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\avdump_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\avdump_x86_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\offertool_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\sbr_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw981546cdcf72ade0.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\aswd310a3b6fb8759eb.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\servers.def.lkg
  • %WINDIR%\temp\asw.0a4a556de0e63004\uat_2924.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw5ec645eae11b9a7b.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw648278530f9d7180.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw81249d6ccec3db61.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\uat_2124.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\program.def
  • %WINDIR%\temp\asw.0a4a556de0e63004\part-jrog2-54.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\part-vps_windows-20120205.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\vps.def
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\gcapi_1607037979996.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\gcapi_16070379802972.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw38d540b477f6edba.tmp
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw578a55c5f4bf2d0d.tmp
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.10221be4-515e-41a4-943f-cf23dc92a633
  • %WINDIR%\temp\asw.0a4a556de0e63004\config.ini
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.9f24c537-f3b0-4fc4-a3e9-cf7f4e4310ab
  • %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • %WINDIR%\temp\asw.0a4a556de0e63004\servers.def
  • %WINDIR%\temp\asw.0a4a556de0e63004\config.def
  • %WINDIR%\temp\asw.0a4a556de0e63004\config.def.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\instup.exe
  • %WINDIR%\temp\asw.0a4a556de0e63004\instcont_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\instup.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\instup_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\part-jrog2-73a.vpx
  • %WINDIR%\temp\asw.48875e96bcc3d423\avast_free_antivirus_setup_online_x64.exe
  • %WINDIR%\temp\asw.0a4a556de0e63004\part-prg_ais-14090985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\part-vps_windows-20110904.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\prod-pgm.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\prod-vps.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\servers.def.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\htmlayout.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\setgui_x64_ais-985.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\uat.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\uata64.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\uat64.vpx
  • %WINDIR%\temp\asw.0a4a556de0e63004\config.def.new
  • %WINDIR%\temp\asw.0a4a556de0e63004\part-setup_ais-14090985.vpx
  • C:\users\public\documents\aswoffertool.exe
  • C:\users\public\documents\gcapi_16070379802328.dll
Deletes the following files
  • %WINDIR%\temp\asw.0a4a556de0e63004\uat_2924.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\uat_2124.dll
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\gcapi_1607037979996.dll
  • C:\users\public\documents\gcapi_16070379802328.dll
  • C:\users\public\documents\aswoffertool.exe
  • %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\gcapi_16070379802972.dll
Moves the following files
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log.tmp.9f24c537-f3b0-4fc4-a3e9-cf7f4e4310ab to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\setup.log
  • from %WINDIR%\temp\asw.48875e96bcc3d423\ecoo.edat to %WINDIR%\temp\asw.0a4a556de0e63004\cookie.bin
  • from %WINDIR%\temp\asw.0a4a556de0e63004\config.def.new to %WINDIR%\temp\asw.0a4a556de0e63004\config.def
  • from %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log.tmp.10221be4-515e-41a4-943f-cf23dc92a633 to %ALLUSERSPROFILE%\avast software\persistent data\avast\logs\event_manager.log
  • from %WINDIR%\temp\asw.0a4a556de0e63004\stats.ini.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\stats.ini
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw981546cdcf72ade0.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\avbugreport.exe
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\aswd310a3b6fb8759eb.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\avdump.exe
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw5ec645eae11b9a7b.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\instup.exe
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw38d540b477f6edba.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\instup.dll
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw578a55c5f4bf2d0d.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\aswoffertool.exe
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw648278530f9d7180.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\sbr.exe
  • from %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\asw81249d6ccec3db61.tmp to %WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\htmlayout.dll
Substitutes the following files
  • %WINDIR%\temp\asw.0a4a556de0e63004\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://n4######.iavs9x.u.avast.com/iavs9x/servers.def.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/prod-pgm.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/avbugreport_x64_ais-985.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/avdump_x64_ais-985.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/avdump_x86_ais-985.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/offertool_x64_ais-985.vpx
  • http://n8######.iavs9x.u.avast.com/iavs9x/sbr_x64_ais-985.vpx
  • http://p1######.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-jrog2-54.vpx
  • http://n8######.vps18tiny.u.avcdn.net/vps18tiny/part-vps_windows-20120205.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 b8######.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 s-#####tiny.avcdn.net
    • DNS ASK r6######.vps18tiny.u.avcdn.net
    • DNS ASK n8######.vps18tiny.u.avcdn.net
    • DNS ASK n2######.vps18tiny.u.avcdn.net
    • DNS ASK p1######.iavs9x.u.avast.com
    • DNS ASK 3.###l.ntp.org
    • DNS ASK g1######.iavs9x.u.avast.com
    • DNS ASK s-####9x.avcdn.net
    • DNS ASK r0######.iavs9x.u.avast.com
    • DNS ASK n8######.iavs9x.u.avast.com
    • DNS ASK n4######.iavs9x.u.avast.com
    • DNS ASK h4######.iavs9x.u.avast.com
    • DNS ASK b7######.iavs9x.u.avast.com
    • DNS ASK sh#####d.ff.avast.com
    • DNS ASK ia####.u.avast.com
    • DNS ASK go#####analytics.com
    • DNS ASK y9######.iavs9x.u.avast.com
    • DNS ASK l2######.vps18tiny.u.avcdn.net
    • '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.48875e96bcc3d423\avast_free_antivirus_setup_online_x64.exe' /cookie:mmm_ava_012_999_a4l_m /ga_clientid:422e7fbe-e362-4e60-a80e-3a21bd9fcf31 /edat_dir:%WINDIR%\Temp\asw.48875e96bcc3d423
    • '%WINDIR%\temp\asw.0a4a556de0e63004\instup.exe' /sfx:lite /sfxstorage:%WINDIR%\Temp\asw.0a4a556de0e63004 /edition:1 /prod:ais /guid:4fa6eeeb-de6d-4682-ad40-85a60861bf1f /ga_clientid:422e7fbe-e362-4e60-a80e-3a21bd9fcf31 /cookie:mmm_ava_012_99...
    • '%WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\instup.exe' /sfx /sfxstorage:%WINDIR%\Temp\asw.0a4a556de0e63004 /edition:1 /prod:ais /guid:4fa6eeeb-de6d-4682-ad40-85a60861bf1f /ga_clientid:422e7fbe-e362-4e60-a80e-3a21bd9fcf31 /cookie:mmm_ava_012_999_a4l...
    • '%WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\aswoffertool.exe' -checkGToolbar -elevated
    • '%WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\aswoffertool.exe' -checkChrome -elevated
    • '%WINDIR%\temp\asw.0a4a556de0e63004\new_14090985\aswoffertool.exe' -checkChromeReactivation -elevated -bc=AVFA
    • 'C:\users\public\documents\aswoffertool.exe' -checkChromeReactivation -bc=AVFA

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