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

Static analysis result for SHA-256 09da007d427399a8…

MALICIOUS

Office (OLE) / .DOCX

173.3 KB Created: 2020-09-17 10:17:00 Authoring application: Microsoft Office Word
MD5: 278f6bd561f3465512fb733ea7eca7ac SHA-1: fd0f7941bb2408d3799acdade26e927a246d5077 SHA-256: 09da007d427399a8878436226980680d7b93a39388023f1a70151a5fbcf16694
202 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open macro that uses CreateObject, indicating an attempt to execute code automatically when the document is opened. The ClamAV heuristic also flags it as a downloader. While the VBA code is obfuscated, the presence of these indicators strongly suggests the macro's purpose is to download and execute a secondary payload. The embedded URL is benign, but the overall behavior points to a downloader.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9762674-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9762674-0
  • 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
9ba8ec3966e91d175acafd30ec3438df19c84a3d5c19c35fd5e40d1b639faa28		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20635 bytes

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