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

Static analysis result for SHA-256 6caca0535793d2e1…

MALICIOUS

Office (OLE) / .DOCX

163.8 KB Created: 2020-12-29 08:56:00 Authoring application: Microsoft Office Word
MD5: 05571af262e9d87f4504a4b4bb148c37 SHA-1: 3251af5c3456f5a9edfd3846afead48b4507d75c SHA-256: 6caca0535793d2e1c28d77bf579d09c8a45b4dfdea071f5f5feb0010bc3c0e85
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The sample contains a VBA macro that is automatically executed upon opening the document. This macro attempts to read and potentially execute files from local paths, suggesting it's part of a downloader or dropper mechanism. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' further supports the downloader classification. The presence of a Document_Open macro and CreateObject calls are common indicators of malicious macro execution.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_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.
  • 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://schemas.openxmlformats.org/drawingml/2006/main

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
3e142f8f1ec045a49f005a6e1f22483ffd9a4a3fba2276e438481e79de80b3fc		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 8366 bytes

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