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

Static analysis result for SHA-256 74af058b98e05d54…

MALICIOUS

Office (OLE) / .DOC

212.6 KB Created: 2020-09-21 12:09:00 Authoring application: Microsoft Office Word
MD5: d791e0147fc8965a82a78c5567a0cf87 SHA-1: fc98e5d3209f61d3bf4c138b85d0ec1802245d68 SHA-256: 74af058b98e05d54a1ab61e1d4984d0b2a984fa4aa258db638b2606b4762e453
242 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious Office document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject and GetObject calls. The VBA code is heavily obfuscated, making it difficult to determine the exact payload, but the presence of these functions strongly suggests it's designed to download and execute a second-stage payload. The ClamAV detection further confirms its malicious nature.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764508-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764508-0
  • Document_Open macro high OLE_VBA_DOCOPEN
    Document_Open macro
  • CreateObject call high OLE_VBA_CREATEOBJ
    CreateObject call
  • GetObject call high OLE_VBA_GETOBJ
    GetObject 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
cea30dbaa44bcaf57fbcd15c35be69cfffbad74d3b69c3addc059acf5ad797f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19026 bytes

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