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Win32.HLLW.Autoruner3.5885

Added to the Dr.Web virus database: 2022-10-07

Virus description added:

Technical Information

To ensure autorun and distribution
Modifies the following registry keys
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /v'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /S'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /p'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /Z'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /x'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /Q'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /J'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /A'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /W'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /g'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /y'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /L'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /t'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /f'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /m'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /D'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /K'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /n'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /o'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /b'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /H'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /u'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /e'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /I'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /R'
  • [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yuacaa' = '%HOMEPATH%\yuacaa.exe /c'
Creates the following files on removable media
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\spib_pima.pdf.lnk
  • <Drive name for removable media>:\10thingscondoms.pdf.lnk
  • <Drive name for removable media>:\ff_ot_user_guide.pdf.lnk
  • <Drive name for removable media>:\2015-02-worms-nanoparticle-toxicity.pdf.lnk
  • <Drive name for removable media>:\lom602.pdf.lnk
  • <Drive name for removable media>:\block.png.lnk
  • <Drive name for removable media>:\calibre.png.lnk
  • <Drive name for removable media>:\cleanlyrics.png.lnk
  • <Drive name for removable media>:\cbz.png.lnk
  • <Drive name for removable media>:\asm.png.lnk
  • <Drive name for removable media>:\arrow-down.png.lnk
  • <Drive name for removable media>:\flower_trans_matte.wmv.lnk
  • <Drive name for removable media>:\music.lnk
  • <Drive name for removable media>:\passport_pal.wmv.lnk
  • <Drive name for removable media>:\babyboymaintoscenesbackground.wmv.lnk
  • <Drive name for removable media>:\testwmv.wmv.lnk
  • <Drive name for removable media>:\calculatorworksheet.xls.lnk
  • <Drive name for removable media>:\excel_example.xls.lnk
  • <Drive name for removable media>:\price030215.xls.lnk
  • <Drive name for removable media>:\contractualdeadlines.xls.lnk
  • <Drive name for removable media>:\new folder.lnk
  • <Drive name for removable media>:\passwords.lnk
  • <Drive name for removable media>:\documents.lnk
  • <Drive name for removable media>:\pictures.lnk
  • <Drive name for removable media>:\dualectls.pdf.lnk
  • <Drive name for removable media>:\babyboymaintoscenesbackground_pal.wmv.lnk
  • <Drive name for removable media>:\fil_20060629111052.pdf.lnk
  • <Drive name for removable media>:\coffee.bmp.lnk
  • <Drive name for removable media>:\uodb.ico
  • <Drive name for removable media>:\yuacaa.exe
  • <Drive name for removable media>:\yuacaax.exe
  • <Drive name for removable media>:\join.avi.lnk
  • <Drive name for removable media>:\delete.avi.lnk
  • <Drive name for removable media>:\000814251_video_01.avi.lnk
  • <Drive name for removable media>:\archer.avi.lnk
  • <Drive name for removable media>:\dashborder_192.bmp.lnk
  • <Drive name for removable media>:\dashborder_144.bmp.lnk
  • <Drive name for removable media>:\toolbar.bmp.lnk
  • <Drive name for removable media>:\default.bmp.lnk
  • <Drive name for removable media>:\dashborder_96.bmp.lnk
  • <Drive name for removable media>:\clip_480_5sec_6mbps_h264.mp4.lnk
  • <Drive name for removable media>:\fi51.doc.lnk
  • <Drive name for removable media>:\applicantform_en.doc.lnk
  • <Drive name for removable media>:\lisp_success.doc.lnk
  • <Drive name for removable media>:\508softwareandos.doc.lnk
  • <Drive name for removable media>:\1189.jpg.lnk
  • <Drive name for removable media>:\region-north-karelia.jpg.lnk
  • <Drive name for removable media>:\3.jpg.lnk
  • <Drive name for removable media>:\2.jpg.lnk
  • <Drive name for removable media>:\parnas_01.jpg.lnk
  • <Drive name for removable media>:\51.mp4.lnk
  • <Drive name for removable media>:\video.mp4.lnk
  • <Drive name for removable media>:\clip_1080_5sec_10mbps_h264.mp4.lnk
  • <Drive name for removable media>:\video.lnk
Malicious functions
To complicate detection of its presence in the operating system,
forces the system hide from view:
  • hidden files
Modifies file system
Creates the following files
  • %HOMEPATH%\yuacaa.exe
Sets the 'hidden' attribute to the following files
  • %HOMEPATH%\yuacaa.exe
  • <Drive name for removable media>:\autorun.inf
  • <Drive name for removable media>:\uodb.ico
  • <Drive name for removable media>:\yuacaa.exe
  • <Drive name for removable media>:\yuacaax.exe
Network activity
Connects to
  • '255.255.255.255':8000
UDP
  • DNS ASK ns#.##ayer1532.com
  • DNS ASK ns#.##deoall.org
  • DNS ASK ns#.##deoall.net
Miscellaneous
Creates and executes the following
  • '%HOMEPATH%\yuacaa.exe'