Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /v'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /d'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /X'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /j'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /n'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /i'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /a'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /g'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /O'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /l'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /S'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /R'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /K'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /M'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /Z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /U'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /c'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /Y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'yiavu' = '%HOMEPATH%\yiavu.exe /f'
Creates the following files on removable media
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\2015-02-patients-topic-work-related-asthma-jobs.pdf.lnk
- <Drive name for removable media>:\spib_pima.pdf.lnk
- <Drive name for removable media>:\bc01.pdf.lnk
- <Drive name for removable media>:\lom602.pdf.lnk
- <Drive name for removable media>:\asm.png.lnk
- <Drive name for removable media>:\background.png.lnk
- <Drive name for removable media>:\dissolveanother.png.lnk
- <Drive name for removable media>:\bg_search_box.png.lnk
- <Drive name for removable media>:\babyboymaintonotesbackground_pal.wmv.lnk
- <Drive name for removable media>:\flower_trans_matte.wmv.lnk
- <Drive name for removable media>:\passport_pal.wmv.lnk
- <Drive name for removable media>:\babyboymaintoscenesbackground_pal.wmv.lnk
- <Drive name for removable media>:\babyboymaintoscenesbackground.wmv.lnk
- <Drive name for removable media>:\testwmv.wmv.lnk
- <Drive name for removable media>:\subjectclassification.xls.lnk
- <Drive name for removable media>:\productos.xls.lnk
- <Drive name for removable media>:\removedtitles_records.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>:\ff_ot_user_guide.pdf.lnk
- <Drive name for removable media>:\music.lnk
- <Drive name for removable media>:\10thingscondoms.pdf.lnk
- <Drive name for removable media>:\51.mp4.lnk
- <Drive name for removable media>:\nud.ico
- <Drive name for removable media>:\yiavu.exe
- <Drive name for removable media>:\yiavux.exe
- <Drive name for removable media>:\000814251_video_01.avi.lnk
- <Drive name for removable media>:\correct.avi.lnk
- <Drive name for removable media>:\split.avi.lnk
- <Drive name for removable media>:\dashborder_96.bmp.lnk
- <Drive name for removable media>:\toolbar.bmp.lnk
- <Drive name for removable media>:\dialmap.bmp.lnk
- <Drive name for removable media>:\coffee.bmp.lnk
- <Drive name for removable media>:\applicantform_en.doc.lnk
- <Drive name for removable media>:\ovp25012015.doc.lnk
- <Drive name for removable media>:\weeklysheet1215.doc.lnk
- <Drive name for removable media>:\fi51.doc.lnk
- <Drive name for removable media>:\uep_form_786_bulletin_1726i602.doc.lnk
- <Drive name for removable media>:\4f0bf7ff71f28.jpg.lnk
- <Drive name for removable media>:\13.jpg.lnk
- <Drive name for removable media>:\1189.jpg.lnk
- <Drive name for removable media>:\168.jpg.lnk
- <Drive name for removable media>:\210252809.jpg.lnk
- <Drive name for removable media>:\clip_1080_5sec_10mbps_h264.mp4.lnk
- <Drive name for removable media>:\video_1.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%\yiavu.exe
Sets the 'hidden' attribute to the following files
- %HOMEPATH%\yiavu.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\nud.ico
- <Drive name for removable media>:\yiavu.exe
- <Drive name for removable media>:\yiavux.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%\yiavu.exe'