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

Static analysis result for SHA-256 a318e56c867c1220…

MALICIOUS

Office (OLE) / .DOC

147.5 KB Created: 2021-09-23 02:01:00 Authoring application: Microsoft Office Word
MD5: ba4e3dc5249cfd0f468f7e2cacb33469 SHA-1: 5bdec58ab4c7ca389bb0ac0231219f0c7c2ff9d1 SHA-256: a318e56c867c12209aa84d5020965513a05c3e9ef65cd1135e9c9753a189b6ff
102 Risk Score

Malware Insights

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

The sample is a malicious OLE document containing VBA macros. The `document_open` macro is triggered upon opening the document. It appears to write content to a file named 'wordOnline.hta' and then executes it using `WshShell.Run`. This suggests the macro's purpose is to download and execute a second-stage payload. The specific family is not identifiable from the provided evidence.

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
38e2f9ad55f3209db6368d4a3c19ee7d90eb14551dc50f508d6339c0599055e2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 710 bytes

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