Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 c1e75fcc95e2ac57…

MALICIOUS

Office (OLE)

2.61 MB Created: 2004-03-29 22:32:10 Authoring application: Microsoft Excel
MD5: 2cdcb2ca820bbfdefb119a6adabe90da SHA-1: fa06aec12c8d0dd94f52d67e9d50c1f6d01e20b9 SHA-256: c1e75fcc95e2ac57707078cd23b808be58c43e4932a09b80a315fbeed7c33aee
108 Risk Score

Malware Insights

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

The file is an Excel OLE document containing a large VBA macro. The 'SE_INVOICE_LURE' heuristic indicates the document body is designed to appear as an invoice or payment request, intended to trick the user into enabling macros. The 'OLE_VBA_CREATEOBJ' and 'EXTRACTED_FILE_STATIC_TRIAGE' heuristics further confirm the presence of suspicious VBA code, likely for executing a malicious payload. No specific URLs or network indicators were extracted, but the presence of obfuscated VBA macros strongly suggests a downloader or dropper functionality.

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.openxmlformats.org/officeDocument/2006/customXml
    • 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.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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
6e16c956f36e083ad6b0ca286a376280a5968184c1629bbd10be250fe4b37460		 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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