Technical Information
To ensure autorun and distribution
Modifies the following registry keys
- [HKCU\Software\Microsoft\Windows\CurrentVersion\Run] 'Yfplecihjlhs' = '"%APPDATA%\iWK1Exf\consent.exe"'
- [HKCU\Software\Classes\MSCFile\shell\open\command] '' = '<SYSTEM32>\cmd.exe /c %TEMP%\8tz.cmd'
Creates or modifies the following files
- %APPDATA%\Microsoft\windows\Start Menu\programs\startup\yfplecihjlhs.lnk
- <SYSTEM32>\tasks\dfobrs
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>\efsui.exe
- <SYSTEM32>\sdchange.exe
- <SYSTEM32>\hdwwiz.exe
- <SYSTEM32>\consent.exe
- <SYSTEM32>\rrinstaller.exe
the following user processes:
- iexplore.exe
Modifies file system
Creates the following files
- %TEMP%\md844.tmp
- %TEMP%\7dagugk.cmd
- %APPDATA%\iwk1exf\consent.exe
- %TEMP%\we179.tmp
- %TEMP%\fda.cmd
- <SYSTEM32>\3870\rrinstaller.exe
- %TEMP%\8tz.cmd
Deletes the following files
- %TEMP%\7dagugk.cmd
- %TEMP%\fda.cmd
- %TEMP%\8tz.cmd
Moves the following files
- from %TEMP%\md844.tmp to %APPDATA%\iwk1exf\winsta.dll
- from %TEMP%\we179.tmp to <SYSTEM32>\3870\mfplat.dll
Modifies the following files
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-3691498038-2086406363-2140527554-1000\f58155b4b1d5a524ca0261c3ee99fb50_0cb67e2f-dc95-45ca-8fb8-69bde8e3f814
Substitutes the following files
- %APPDATA%\Microsoft\Crypto\RSA\S-1-5-21-3691498038-2086406363-2140527554-1000\f58155b4b1d5a524ca0261c3ee99fb50_0cb67e2f-dc95-45ca-8fb8-69bde8e3f814
Miscellaneous
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%\7DAGUgk.cmd
- '<SYSTEM32>\cmd.exe' /c schtasks.exe /Delete /F /TN "User_Feed_Synchronization-{69635c26-7772-773d-ac6d-11cbcbcfae77}"
- '<SYSTEM32>\schtasks.exe' /Delete /F /TN "User_Feed_Synchronization-{69635c26-7772-773d-ac6d-11cbcbcfae77}"
- '<SYSTEM32>\cmd.exe' /c %TEMP%\fdA.cmd
- '<SYSTEM32>\eventvwr.exe'
- '<SYSTEM32>\cmd.exe' /c %TEMP%\8tz.cmd
- '<SYSTEM32>\schtasks.exe' /Create /F /TN "Dfobrs" /SC minute /MO 60 /TR "<SYSTEM32>\3870\rrinstaller.exe" /RL highest
- '<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%\7DAGUgk.cmd' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c schtasks.exe /Delete /F /TN "User_Feed_Synchronization-{69635c26-7772-773d-ac6d-11cbcbcfae77}"' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\fdA.cmd' (with hidden window)
- '<SYSTEM32>\eventvwr.exe' ' (with hidden window)
- '<SYSTEM32>\cmd.exe' /c %TEMP%\8tz.cmd' (with hidden window)
