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

Static analysis result for SHA-256 7a711af2786b944e…

MALICIOUS

Office (OLE) / .DOC

200.9 KB Created: 2020-09-21 06:43:00 Authoring application: Microsoft Office Word
MD5: 7549dac1b46f545346421437c860727d SHA-1: db0b4788addfbbe296dd4ec3b029b2c58d9fc639 SHA-256: 7a711af2786b944ea840c5593c984743dd8c99c6ccf7006d7100e9ad3e43f504
242 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open auto-execution macro. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. The macro code is heavily obfuscated, making it difficult to determine the exact payload or destination, but the overall pattern suggests a downloader. The ClamAV detection as 'Doc.Downloader.Generic' further supports this assessment.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764468-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764468-0
  • 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
7169cbbf5de322d778ca9a77dc58bcf8bb22a6f6d4bfec64dbfa06bc63509b99		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19229 bytes

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