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

Static analysis result for SHA-256 70f8b76003bc7406…

MALICIOUS

Office (OLE) / .DOCX

153.8 KB Created: 2020-09-14 22:09:00 Authoring application: Microsoft Office Word
MD5: f311fb7ddfb4578f72a114bb590bc49f SHA-1: e6644b9e15e4d73a90b72ff2d3b4642b64616b4f SHA-256: 70f8b76003bc7406cb62c86ea3ff4e8437cb4366b7178f64ab4a530a0f4e5522
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1204.002 Malicious File

The sample is a Microsoft Office document containing VBA macros. The 'Document_open' macro is configured to execute upon opening, and it utilizes 'CreateObject' to initiate a sequence of commands. These commands are designed to download and execute a second-stage payload, as indicated by the heuristic firings and the structure of the VBA code.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9760527-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760527-0
  • 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
bf2dc6e4793502154f28a14458af4f5198ccc48932a5641a4c34f7f1fcdc0c82		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18582 bytes

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