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

Static analysis result for SHA-256 66f8513c73d53950…

MALICIOUS

Office (OLE) / .DOCX

177.3 KB Created: 2020-09-28 12:01:00 Authoring application: Microsoft Office Word
MD5: 9d5bb37634efa11da8bf2bef286fb59c SHA-1: 2e1f709c6996564e2f66d94df80c809bf29e0ee8 SHA-256: 66f8513c73d539502d24299e8e516103baa2c1d3bdb23ccba8e29861463f211b
202 Risk Score

Malware Insights

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

The sample is a malicious Office document containing VBA macros. The 'Document_Open' macro is present and configured to execute automatically, indicating an attempt to run malicious code upon opening. The presence of 'CreateObject' and obfuscated code suggests the macro's purpose is to download and execute a secondary payload, aligning with common downloader tactics.

Heuristics 6

  • ClamAV: Doc.Downloader.Generic-9768640-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Generic-9768640-0
  • 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
41d5da1c3b5ac37936783dc0f6deb9a466b44f4833e7f3cfb69b25cedc4e48ca		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 6262 bytes

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