Malicious Office (OLE) / .DOC — malware analysis report

Static analysis result for SHA-256 3c8c9ca4e08652c6…

MALICIOUS

Office (OLE) / .DOC

147.5 KB Created: 2021-09-23 00:23:00 Authoring application: Microsoft Office Word
MD5: 0424003964100e70ab13501447551d7b SHA-1: 9d10e4c6ddd11a894b2bef74805629822a73ab84 SHA-256: 3c8c9ca4e08652c65c9caec8cd006d87c1c8857cc1afa1e5773b2c145143f518
102 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample contains a malicious VBA macro triggered by the Document_Open event. This macro writes content to a file named 'fiveExcelWorld.hta' and then executes it using WshShell.run. This indicates the document is designed to download and execute a second-stage payload.

Heuristics 4

  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • 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.
  • VBA macros detected medium OLE_VBA_MACROS
    Document contains VBA macro code
  • 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://ns.adobe.com/xap/1.0/
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/photoshop/1.0/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/xap/1.0/sType/ResourceEvent#
    • http://ns.adobe.com/xap/1.0/sType/ResourceRef#
    • http://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
c346439eda0c269ae0846d797026ef0d3f3f01f79793b8a99672351ac0ecaa1d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 695 bytes

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