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

Static analysis result for SHA-256 16e58be61afe2d7b…

MALICIOUS

Office (OLE) / .DOC

158.5 KB Created: 2020-09-22 07:35:00 Authoring application: Microsoft Office Word
MD5: 454101f171ded13ddf09837e6b4c94d4 SHA-1: 48e4f115459cfa40b24aaf161ee701de2fcaa559 SHA-256: 16e58be61afe2d7b3d8b921e05f4e72ff5bd396480f6b904a915cabbd7985044
242 Risk Score

Malware Insights

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

The sample contains a Document_Open VBA macro that utilizes CreateObject and GetObject calls, indicating an attempt to execute arbitrary code. The macro is heavily obfuscated, but its primary function appears to be downloading and executing a second-stage payload. The ClamAV detection further supports the malicious nature of the file.

Heuristics 7

  • ClamAV: Doc.Malware.Ewtz-9765424-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Ewtz-9765424-0
  • 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
a112d95a2b3b8361e272604fc368010c1a607c2cd21f88c20a607d79b8ac6136		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16742 bytes

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