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

Static analysis result for SHA-256 6531643dd8a220f8…

MALICIOUS

Office (OLE) / .DOCX

287.5 KB Created: 2020-10-29 11:27:00 Authoring application: Microsoft Office Word
MD5: 2ed56117c7fb258160e0f6cd6048e58a SHA-1: 02298ff50fb6dd4978294d005753b168fcbe0a3a SHA-256: 6531643dd8a220f81c3d2683f3eebec018c99bd7ead8dfadd86a2e8ef7bf63fd
202 Risk Score

Malware Insights

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro designed to execute automatically. The presence of CreateObject calls and p-code execution indicates the macro is intended to perform actions beyond simple document manipulation. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests its purpose is to download a secondary payload, aligning with the Ingress Tool Transfer technique. The macro's obfuscated nature and the truncated script prevent a more detailed analysis of its specific actions or IOCs beyond the macro file itself.

Heuristics 6

  • ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
  • 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
898dac0a9fbba39aaf7a14ff7100c80bc81af6e0cb0f2cf6d397c84d46877d50		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18710 bytes

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