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

Static analysis result for SHA-256 7a5d143f061f77be…

MALICIOUS

Office (OLE) / .DOCX

181.5 KB Created: 2020-10-22 12:14:00 Authoring application: Microsoft Office Word
MD5: c57510098d7873919863e15990dce871 SHA-1: 2bf362c2a1a49d2151cd3ac36bb04c4ce1e68b26 SHA-256: 7a5d143f061f77beae7a31802e2ef8950751b83be5318a370196dd784508361a
202 Risk Score

Malware Insights

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon opening the document. The macro uses CreateObject, suggesting it's designed to download and execute a second-stage payload. The ClamAV detection as 'Doc.Downloader.Logan-9781905-0' further supports this downloader functionality.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
312ef617e63493e61b3bcd46b3231fa9b7aec5a75b005f32edf123ee68ffccb7		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18806 bytes

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