Win32.HLLW.Autoruner2.56151

Technical Information

To ensure autorun and distribution

Modifies the following registry keys

[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /g'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /m'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /W'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /d'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /L'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /V'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /r'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /j'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /b'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /I'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /C'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /U'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run\] 'rotas' = '%HOMEPATH%\rotas.exe /y'

Creates the following files on removable media

<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\block.exe
<Drive name for removable media>:\cbz.exe
<Drive name for removable media>:\arrow-down.exe
<Drive name for removable media>:\background.exe
<Drive name for removable media>:\flower_trans_matte.exe
<Drive name for removable media>:\passport_pal.exe
<Drive name for removable media>:\babyboymaintonotesbackground_pal.exe
<Drive name for removable media>:\testwmv.exe
<Drive name for removable media>:\price030215.exe
<Drive name for removable media>:\1sm_price.exe
<Drive name for removable media>:\calculatorworksheet.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>:\fil_20060629111052.exe
<Drive name for removable media>:\porn.exe
<Drive name for removable media>:\ff_ot_user_guide.exe
<Drive name for removable media>:\51.exe
<Drive name for removable media>:\rotas.exe
<Drive name for removable media>:\archer.exe
<Drive name for removable media>:\split.exe
<Drive name for removable media>:\dashborder_96.exe
<Drive name for removable media>:\dashborder_192.exe
<Drive name for removable media>:\hanni_umami_chapter.exe
<Drive name for removable media>:\fi51.exe
<Drive name for removable media>:\1189.exe
<Drive name for removable media>:\3.exe
<Drive name for removable media>:\13.exe
<Drive name for removable media>:\210252809.exe
<Drive name for removable media>:\pushkin.exe
<Drive name for removable media>:\video_1.exe
<Drive name for removable media>:\video.exe
<Drive name for removable media>:\clip_1080_5sec_10mbps_h264.exe
<Drive name for removable media>:\10thingscondoms.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

Injects code into

the following system processes:

<SYSTEM32>\taskhost.exe

Modifies file system

Creates the following files

%HOMEPATH%\rotas.exe

Sets the 'hidden' attribute to the following files

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

Network activity

Connects to

'ns#.##ayer1352.com':8003

UDP

DNS ASK ns#.##ayer1352.com

Miscellaneous

Creates and executes the following

'%HOMEPATH%\rotas.exe'

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Technical Information