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

Static analysis result for SHA-256 06dc08ea7da16ee4…

MALICIOUS

Office (OLE) / .DOCX

178.0 KB Created: 2020-10-22 10:11:00 Authoring application: Microsoft Office Word
MD5: 76d3e25f07f50110f925a47a84cf686b SHA-1: 0753ad47b85a988575d6582db3b6688a9e3fb71a SHA-256: 06dc08ea7da16ee44235f6f6009c538b3db08f6198613fbf8c66be4446da7e6a
202 Risk Score

Malware Insights

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

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open heuristic. The macro utilizes CreateObject, a common technique for executing arbitrary code. ClamAV identifies the file as 'Doc.Downloader.Logan-9781905-0', suggesting it's a downloader. The VBA code itself is heavily obfuscated, but the presence of the Document_Open macro and the CreateObject call strongly suggests the intent is to download and execute a secondary payload.

Heuristics 6

  • ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
  • 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
f977b274eae3d98ca756a10910ec7f42c1a29b087c225685f92a2f289133a3d9		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18827 bytes

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