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

Static analysis result for SHA-256 6885a68b8ea6eddc…

MALICIOUS

Office (OLE) / .DOCX

175.3 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word
MD5: 4a160807578a1212e6eaa32d6f13e5f3 SHA-1: 8d8e559277fcced07ed428f4e64c4af641e5281e SHA-256: 6885a68b8ea6eddc639d7f787451c8f7d98f44a57f7a17d48e5f93cb4aaccad1
202 Risk Score

Malware Insights

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

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. The ClamAV detection 'Doc.Downloader.Generic-9763054-0' strongly suggests the macro's purpose is to download and execute a secondary payload. While the exact download URL is obfuscated within the script, the overall behavior points to a downloader malware.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
  • 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
620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 21992 bytes

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