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

Static analysis result for SHA-256 5baed32dcd265a53…

MALICIOUS

Office (OLE) / .DOCX

167.5 KB Created: 2021-01-22 16:11:00 Authoring application: Microsoft Office Word
MD5: fc195dcdb9d96b54f7099608aa433d25 SHA-1: c231cde829e0ab1140a84c01a2d54e4b41a259e3 SHA-256: 5baed32dcd265a53a8f5f4182bfa79336ffa1acc17f1ab71e8387529a82b10cd
202 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. This macro is designed to execute obfuscated code, indicated by the CreateObject call and p-code auto-execution firings. The primary function of this macro appears to be downloading and executing a second-stage payload, a common technique for malware delivery.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033990-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033990-0
  • 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
5ed4257a756cf59fd0bdd4996a568d11e210a8cb1fd2c78a16a7c0bd2a73f2f9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16688 bytes

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