Technical Information
To ensure autorun and distribution:
Modifies the following registry keys:
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'learaah' = '%HOMEPATH%\learaah.exe'
Creates the following files on removable media:
- <Drive name for removable media>:\Pictures .lnk
- <Drive name for removable media>:\Documents .lnk
- <Drive name for removable media>:\Video .lnk
- <Drive name for removable media>:\Music .lnk
- <Drive name for removable media>:\Passwords .lnk
- <Drive name for removable media>:\learaah.exe
- <Drive name for removable media>:\autorun.inf
- <Drive name for removable media>:\New Folder .lnk
- <Drive name for removable media>:\learaah.scr
Malicious functions:
To complicate detection of its presence in the operating system,
forces the system hide from view:
- hidden files
Creates and executes the following:
- '%HOMEPATH%\learaah.exe'
Executes the following:
- '<SYSTEM32>\wbem\wmiadap.exe' /R /T
Modifies file system :
Creates the following files:
- %HOMEPATH%\learaah.exe
Sets the 'hidden' attribute to the following files:
- <Drive name for removable media>:\learaah.exe
- <Drive name for removable media>:\learaah.scr
- %HOMEPATH%\learaah.exe
- <Drive name for removable media>:\autorun.inf
Deletes the following files:
- <SYSTEM32>\PerfStringBackup.TMP
- <SYSTEM32>\wbem\Performance\WmiApRpl.ini
Network activity:
Connects to:
- 'ns#.###picturehut.net':8002
UDP:
- DNS ASK ns#.###picturehut.net
Miscellaneous:
Searches for the following windows:
- ClassName: 'Indicator' WindowName: ''
