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

Static analysis result for SHA-256 5ddc573e8c235413…

MALICIOUS

Office (OLE) / .DOC

167.6 KB Created: 2020-09-14 13:44:00 Authoring application: Microsoft Office Word
MD5: 760a740e88b40079e17fd01d69c070d4 SHA-1: a237a5505b5eba2e9a55672dbf38b58281bee99d SHA-256: 5ddc573e8c235413ac55516528271ad942a5bea5d06b181685537b0d4ddf7ffa
202 Risk Score

Malware Insights

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

The sample is a malicious Microsoft Word document containing a VBA macro. The Document_Open macro is configured to execute automatically, and it uses CreateObject to likely download and execute a second-stage payload. The ClamAV detection 'Doc.Downloader.Generic-9759988-0' further supports this finding. The VBA code is obfuscated, making it difficult to determine the exact download URL or execution method without further dynamic analysis.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9759988-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9759988-0
  • 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
f8f05dcf3e3edc2b86aaf635a586a86b3be75873e300dc406d21a4e9dd6169c2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 22670 bytes

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