Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [<HKCU>\Software\Microsoft\Windows\CurrentVersion\Run] 'Ddhygkzbao' = '"%APPDATA%\TYwKE\msinfo32.exe"'
- [<HKCU>\Software\Classes\MSCFile\shell\open\command] '' = '<SYSTEM32>\cmd.exe /c %TEMP%\WqHV.cmd'
Creates or modifies the following files
- %APPDATA%\microsoft\windows\start menu\programs\startup\ddhygkzbao.lnk
- <SYSTEM32>\tasks\gwgidjduwtjnhaq
Malicious functions
Executes the following
- '<SYSTEM32>\netsh.exe' advfirewall firewall add rule name="Core Networking - Multicast Listener Done (ICMPv4-In)" program="%WINDIR%\Explorer.EXE" dir=in action=allow protocol=TCP localport=any
Injects code into
the following system processes:
- %WINDIR%\explorer.exe
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\msinfo32.exe
- <SYSTEM32>\printbrmui.exe
- <SYSTEM32>\cmmon32.exe
- <SYSTEM32>\atbroker.exe
- <SYSTEM32>\ucsvc.exe
- <SYSTEM32>\locationnotifications.exe
- <SYSTEM32>\mmc.exe
the following user processes:
- firefox.exe
- iexplore.exe
Reads files which store third party applications passwords
- %HOMEPATH%\desktop\dashborder_144.bmp
- %HOMEPATH%\desktop\dashborder_120.bmp
- %HOMEPATH%\desktop\file_p_00000000_1371597592.docx
- %HOMEPATH%\desktop\dashborder_192.bmp
Modifies file system
Creates the following files
- %TEMP%\wls20e8.tmp
- %TEMP%\xjhkfkq.cmd
- %APPDATA%\tywke\msinfo32.exe
- %TEMP%\9a58ab.tmp
- %TEMP%\tbw.cmd
- <SYSTEM32>\4433\mmc.exe
- %TEMP%\wqhv.cmd
Deletes the following files
- %TEMP%\xjhkfkq.cmd
- %TEMP%\tbw.cmd
- %TEMP%\wqhv.cmd
Moves the following files
- from %TEMP%\wls20e8.tmp to %APPDATA%\tywke\atl.dll
- from %TEMP%\9a58ab.tmp to <SYSTEM32>\4433\mfc42u.dll
Modifies the following files
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\f58155b4b1d5a524ca0261c3ee99fb50_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
Substitutes the following files
- %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-1960123792-2022915161-3775307078-1001\f58155b4b1d5a524ca0261c3ee99fb50_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
Miscellaneous
Creates and executes the following
- '<SYSTEM32>\cmd.exe' /c netsh advfirewall firewall add rule name="Core Networking - Multicast Listener Done (ICMPv4-In)" program="%WINDIR%\Explorer.EXE" dir=in action=allow protocol=TCP localport=any' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\XJHkFkQ.cmd' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c schtasks.exe /Delete /F /TN "User_Feed_Synchronization-{320cb25a-e42e-d835-e102-32582950566a}"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\TBW.cmd' (with hidden window)
- '<SYSTEM32>\eventvwr.exe' ' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\WqHV.cmd' (with hidden window)
Executes the following
- '<SYSTEM32>\cmd.exe' /c netsh advfirewall firewall add rule name="Core Networking - Multicast Listener Done (ICMPv4-In)" program="%WINDIR%\Explorer.EXE" dir=in action=allow protocol=TCP localport=any
- '<SYSTEM32>\cmd.exe' /c %TEMP%\XJHkFkQ.cmd
- '<SYSTEM32>\cmd.exe' /c schtasks.exe /Delete /F /TN "User_Feed_Synchronization-{320cb25a-e42e-d835-e102-32582950566a}"
- '<SYSTEM32>\schtasks.exe' /Delete /F /TN "User_Feed_Synchronization-{320cb25a-e42e-d835-e102-32582950566a}"
- '<SYSTEM32>\cmd.exe' /c %TEMP%\TBW.cmd
- '<SYSTEM32>\eventvwr.exe'
- '<SYSTEM32>\cmd.exe' /c %TEMP%\WqHV.cmd
- '<SYSTEM32>\schtasks.exe' /Create /F /TN "Gwgidjduwtjnhaq" /SC minute /MO 60 /TR "<SYSTEM32>\4433\mmc.exe compmgmt.msc" /RL highest
