Win32.HLLW.Autoruner3.966

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /O'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /U'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /Y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /n'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /w'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /M'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /X'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /D'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /I'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /k'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'mukal' = '%HOMEPATH%\mukal.exe /p'

Creates the following files on removable media

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\cbz.exe
<Drive name for removable media>:\asm.exe
<Drive name for removable media>:\breakpoint.exe
<Drive name for removable media>:\bg_search_box.exe
<Drive name for removable media>:\cleanlyrics.exe
<Drive name for removable media>:\block.exe
<Drive name for removable media>:\babyboymaintoscenesbackground.exe
<Drive name for removable media>:\babyboymaintonotesbackground_pal.exe
<Drive name for removable media>:\flower_trans_matte.exe
<Drive name for removable media>:\testwmv.exe
<Drive name for removable media>:\excel_example.exe
<Drive name for removable media>:\removedtitles_records.exe
<Drive name for removable media>:\price030215.exe
<Drive name for removable media>:\guide_reorganization_mapping.exe
<Drive name for removable media>:\contractualdeadlines.exe
<Drive name for removable media>:\productos.exe
<Drive name for removable media>:\fiche_inscription_2015.exe
<Drive name for removable media>:\secret.exe
<Drive name for removable media>:\sexy.exe
<Drive name for removable media>:\bc01.exe
<Drive name for removable media>:\porn.exe
<Drive name for removable media>:\2015-02-patients-topic-work-related-asthma-jobs.exe
<Drive name for removable media>:\d0068197bb5a41fea16a220c45390606.exe
<Drive name for removable media>:\mukal.exe
<Drive name for removable media>:\delete.exe
<Drive name for removable media>:\correct.exe
<Drive name for removable media>:\split.exe
<Drive name for removable media>:\default.exe
<Drive name for removable media>:\dialmap.exe
<Drive name for removable media>:\dashborder_192.exe
<Drive name for removable media>:\dashborder_120.exe
<Drive name for removable media>:\cveuropeo.exe
<Drive name for removable media>:\february_catalogue__2015.exe
<Drive name for removable media>:\applicantform_en.exe
<Drive name for removable media>:\lisp_success.exe
<Drive name for removable media>:\uep_form_786_bulletin_1726i602.exe
<Drive name for removable media>:\168.exe
<Drive name for removable media>:\3.exe
<Drive name for removable media>:\1189.exe
<Drive name for removable media>:\4f0bf7ff71f28.exe
<Drive name for removable media>:\region-north-karelia.exe
<Drive name for removable media>:\video.exe
<Drive name for removable media>:\clip_480_5sec_6mbps_h264.exe
<Drive name for removable media>:\passwords.exe

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%\mukal.exe

Sets the 'hidden' attribute to the following files

%HOMEPATH%\mukal.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\mukal.exe

Network activity

Connects to

'ns#.##ayer1352.com':8000

UDP

DNS ASK ns#.##ayer1352.com

Miscellaneous

Creates and executes the following

'%HOMEPATH%\mukal.exe'

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Technical Information