Malicious Office (OOXML) / .XLSM — malware analysis report

Static analysis result for SHA-256 29c3098dd8c8ae56…

MALICIOUS

Office (OOXML) / .XLSM

117.8 KB Created: 2014-03-17 16:09:30 UTC Authoring application: Microsoft Excel 16.0300 First seen: 2026-02-05
MD5: b7e5f73e4dfadd77a2230c6e474a2aa8 SHA-1: 651b52cb94c5210bab93b624afa383db2c12b712 SHA-256: 29c3098dd8c8ae564e5315d07dfdf07a6dc43455dcfe844e74675a632ad29efe
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File T1071.001 Web Protocols

The sample is an XLSM file containing a Workbook_Open macro that executes VBA code. This code attempts to download a second-stage payload using URLDownloadToFile and then execute it. The document body content appears to be a customer statement, likely used as a lure. The macro also attempts to hide its activity by deleting worksheets and showing a form named 'frmCCReportSuite'.

Heuristics 7

  • URLDownloadToFile in VBA critical OLE_VBA_DOWNLOAD
    URLDownloadToFile in VBA
  • Workbook_Open macro high OLE_VBA_WBOPEN
    Workbook_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • VBA p-code auto-exec with execution tokens high OLE_VBA_PCODE_AUTOEXEC_EXEC
    Compiled VBA/cache stream contains an auto-execution token together with shell/download/object-execution tokens. This catches p-code-only or source-extraction-failure macro documents where visible source is unavailable.
  • 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 project inside OOXML medium OOXML_VBA
    Document contains vbaProject.bin — VBA macros present
  • 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 https://stjohn.sharepoint.com/teams/finance/Scanned%20documents/Scanned%20documents/Proactis/
    • http://prd-mis-ssrs001.int.sja.org.uk/reportserver/Pages/ReportViewer.aspx?%2fSJA+-+MIS+Reports%2fAccounting%2fInvoice&InvoiceNumber=
    • http://prd-mis-ssrs001.int.sja.org.uk/reportserver/Pages/ReportViewer.aspx?%2fSJA+-+MIS+Reports%2fAccounting%2fBespokeInvoice&InvoiceNumber=

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
d950affb38d6107cc36ef68c1e2a87076a8b72974eec76118b977792631aa19b		 vba-macro oletools.olevba.extract_macros (decoded VBA source from OOXML) 60436 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.
vbaProject_00.bin
51ff28879774142133efb95581f9752af81d9d389801e19cfa81d788c26feecf		 vba-project OOXML VBA project: xl/vbaProject.bin 240640 bytes
Detection
ClamAV: No threats found
Obfuscation or payload: likely
Carved macro source contains an auto-exec entry point and execution/download terms.

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