Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /b'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /j'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /u'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /G'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /A'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /T'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /C'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /m'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /H'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /x'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /y'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /d'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /V'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /z'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /l'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /q'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /P'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /I'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /N'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /f'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /W'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /r'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /k'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /O'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /e'
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'qusud' = '%HOMEPATH%\qusud.exe /s'
Creates the following files on removable media:
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\nFEf.ico
- <Drive name for removable media>:\qusud.exe
- <Drive name for removable media>:\qusudx.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:
- hidden files
Modifies file system:
Creates the following files:
- %HOMEPATH%\qusud.exe
Sets the 'hidden' attribute to the following files:
- %HOMEPATH%\qusud.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\nFEf.ico
- <Drive name for removable media>:\qusud.exe
- <Drive name for removable media>:\qusudx.exe
Network activity:
Connects to:
- 'ns#.##ayer1532.com':8000
UDP:
- DNS ASK ns#.##ayer1532.com
Miscellaneous:
Creates and executes the following:
- '%HOMEPATH%\qusud.exe'