Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'Oywazb' = '%APPDATA%\jtmf\wextract.exe'
Creates or modifies the following files
- %APPDATA%\Microsoft\windows\Start Menu\programs\startup\oywazb.lnk
- <SYSTEM32>\tasks\ovwgd
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
the following user processes:
- firefox.exe
Hooks functions
in browsers
- firefox.exe process, nss3.dll module
Terminates or attempts to terminate
the following system processes:
- <SYSTEM32>\wextract.exe
- <SYSTEM32>\isoburn.exe
the following user processes:
- iexplore.exe
Modifies file system
Creates the following files
- %TEMP%\b72a0.tmp
- %TEMP%\532kgin.cmd
- %APPDATA%\jtmf\wextract.exe
- %TEMP%\d739e23.tmp
- %TEMP%\4zj5.cmd
- <SYSTEM32>\3t6q1g\isoburn.exe
Deletes the following files
- %TEMP%\532kgin.cmd
- %TEMP%\4zj5.cmd
Moves the following files
- from %TEMP%\b72a0.tmp to %APPDATA%\jtmf\version.dll
- from %TEMP%\d739e23.tmp to <SYSTEM32>\3t6q1g\uxtheme.dll
Modifies the following files
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-3150914307-1777937420-491476919-1000\f58155b4b1d5a524ca0261c3ee99fb50_d99ef00b-ccd3-4f1d-9980-90ac453b0b47
Substitutes the following files
- %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-3150914307-1777937420-491476919-1000\f58155b4b1d5a524ca0261c3ee99fb50_d99ef00b-ccd3-4f1d-9980-90ac453b0b47
Miscellaneous
Creates and 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' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\532kGiN.cmd' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\4zj5.cmd' (with hidden window)
- '<SYSTEM32>\schtasks.exe' /Create /F /TN "Ovwgd" /TR <SYSTEM32>\3T6Q1g\isoburn.exe /SC minute /MO 60 /RL highest' (with hidden window)
Executes the following
- '<SYSTEM32>\cmd.exe' /c %TEMP%\532kGiN.cmd
- '<SYSTEM32>\cmd.exe' /c %TEMP%\4zj5.cmd
- '<SYSTEM32>\schtasks.exe' /Create /F /TN "Ovwgd" /TR <SYSTEM32>\3T6Q1g\isoburn.exe /SC minute /MO 60 /RL highest
- '<SYSTEM32>\schtasks.exe' /Query /TN "Ovwgd"
