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

Static analysis result for SHA-256 670f0987cdf8a447…

MALICIOUS

Office (OLE) / .DOCX

182.5 KB Created: 2020-10-22 07:03:00 Authoring application: Microsoft Office Word
MD5: 811a90d1b771e8daa35242ed23c238f6 SHA-1: e28e599e90d22a1448517ed5b24bdc8008cb4431 SHA-256: 670f0987cdf8a447e03310d81c97effc01c48392bc2482e5218f952cefcb6c05
202 Risk Score

Malware Insights

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

The file contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The ClamAV detection 'Doc.Downloader.Logan-9781905-0' strongly suggests a downloader functionality. The obfuscated VBA script likely attempts to download and execute a secondary payload, although the exact URL or mechanism is not directly discernible due to obfuscation.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
9eefe8f6ffcba14d0b71c6151e5387d8f5be4d801ca642a4cdf376fd6353abf9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 19020 bytes

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