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

Static analysis result for SHA-256 712fb1d60ad43d00…

MALICIOUS

Office (OLE) / .DOCX

214.6 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word
MD5: fe05dfa4af9c0c129f8106af6484c3fe SHA-1: 79c5acf0fb7ba5a9e24a2e8ab1599e2f611ed327 SHA-256: 712fb1d60ad43d0063de94b64d1db09629a00d5803efef4ce9a6055f82b26ff1
242 Risk Score

Malware Insights

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

The sample is a Microsoft Office document containing VBA macros. The 'Document_Open' macro is present and configured to execute upon opening, indicating an attempt to automatically run malicious code. The presence of 'CreateObject' and 'GetObject' calls within the macro suggests the script is designed to download and execute a second-stage payload, a common technique for malware delivery. No specific family could be identified, but the behavior is consistent with a downloader.

Heuristics 7

  • ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
  • 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
a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19249 bytes

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