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Win32.HLLW.Autoruner2.38791
Added to the Dr.Web virus database:
2018-05-06
Virus description added:
2018-05-05
Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /Z'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /B'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /d'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /I'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /l'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /o'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /J'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /W'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /S'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /v'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /F'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /Q'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /a'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /c'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /T'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /y'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /h'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /x'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /R'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /u'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /p'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /e'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /K'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /N'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /G'
[<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'yrmaf' = '%HOMEPATH%\yrmaf.exe /m'
Creates the following files on removable media:
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\JxQO.ico
<Drive name for removable media>:\yrmaf.exe
<Drive name for removable media>:\yrmafx.exe
<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>:\Music.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:
Modifies file system:
Creates the following files:
Sets the 'hidden' attribute to the following files:
%HOMEPATH%\yrmaf.exe
<Drive name for removable media>:\autorun.inf
<Drive name for removable media>:\JxQO.ico
<Drive name for removable media>:\yrmaf.exe
<Drive name for removable media>:\yrmafx.exe
Network activity:
Connects to:
'ns#.##ayer1532.com':8000
UDP:
DNS ASK ns#.##ayer1532.com
Miscellaneous:
Creates and executes the following:
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