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

Static analysis result for SHA-256 6f17adbca4f52f4d…

MALICIOUS

Office (OLE) / .DOCX

161.8 KB Created: 2020-09-17 22:23:00 Authoring application: Microsoft Office Word
MD5: e5f0533ae19e765ef0dd73f8717a6077 SHA-1: d13c84b29f2688851f0c7867eb44dadaf59b8971 SHA-256: 6f17adbca4f52f4dced97d473ed1b7b29e91b09a0433a5febfa6292962d92803
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for malware delivery. The macro uses CreateObject, indicating an attempt to execute code. While the script is obfuscated, its presence and the auto-execution trigger strongly suggest it's designed to download and run a secondary payload. The ClamAV detection further supports its malicious nature.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763113-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763113-0
  • 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
98a29bdf4abf669a96318f520c9bfe3aa10e950f57f7c585bdcdcff6e6ad90b2		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21952 bytes

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