Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 3f10f8114d21d93c…

MALICIOUS

Office (OLE)

2.62 MB Created: 2004-03-29 22:32:10 Authoring application: Microsoft Excel
MD5: beb0f5eb4ec045d71d1bfc563e33c676 SHA-1: e9708acfb2d1c05679b5f18186e79b42f663769b SHA-256: 3f10f8114d21d93ce2c3564db8d0671e6d5fc612890379d11ac047c6f788ce4b
108 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.002 Spearphishing Attachment

The file is an Excel document containing VBA macros, indicated by the OLE_VBA_MACROS heuristic. The SE_INVOICE_LURE heuristic suggests the document's content is designed to trick the user, likely by appearing as an invoice or payment-related document. The presence of VBA macros and the CreateObject call (OLE_VBA_CREATEOBJ) strongly suggest that the macros are intended to download and execute a secondary payload. The extracted artifact 'macros.bas' is also a key indicator.

Heuristics 5

  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE
    One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • Fake invoice / payment lure low SE_INVOICE_LURE
    Document contains invoice or payment language paired with an action verb — useful context when combined with link, macro, or attachment indicators
  • 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.microsoft.com/sharepoint/v3/contenttype/forms
    • http://schemas.microsoft.com/office/2006/metadata/contentType
    • http://schemas.microsoft.com/office/2006/metadata/properties/metaAttributes
    • http://schemas.microsoft.com/office/2006/metadata/properties
    • http://www.w3.org/2001/XMLSchema
    • http://schemas.microsoft.com/sharepoint/v3
    • http://schemas.microsoft.com/office/2006/documentManagement/types
    • http://schemas.openxmlformats.org/package/2006/metadata/core-properties
    • http://www.w3.org/2001/XMLSchema-instance
    • http://purl.org/dc/elements/1.1/
    • http://purl.org/dc/terms/
    • http://schemas.microsoft.com/office/internal/2005/internalDocumentation
    • http://dublincore.org/schemas/xmls/qdc/2003/04/02/dc.xsd
    • http://dublincore.org/schemas/xmls/qdc/2003/04/02/dcterms.xsd
    • http://schemas.openxmlformats.org/officeDocument/2006/customXml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
3d4976e4c0b3b314038a4e4ff40c9da238bded2ebcaeb62456c23ba9f9bbc5f1		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 88067 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved artifact contains 17 Chr/ChrW string-construction calls.

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