Malicious Office (OLE) — malware analysis report

Static analysis result for SHA-256 1007f574ebe64672…

MALICIOUS

Office (OLE)

155.8 KB Created: 2020-09-14 19:47:00 Authoring application: Microsoft Office Word
MD5: b19bf27e3706ecce45d82ef5670c9b2b SHA-1: 5bd36e74d121e3e3b9b62fab5241bfb031e5548a SHA-256: 1007f574ebe646725e167d5c3d77fa0babd16c2d8bd9a9199509f74d0de5674b
202 Risk Score

Malware Insights

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

The sample is a Microsoft Office Word document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute malicious code upon opening. The VBA code appears to be obfuscated, but the presence of the Document_Open macro and CreateObject call strongly suggests it is designed to download and execute a second-stage payload. The ClamAV detection further supports its malicious nature.

Heuristics 6

  • ClamAV: Doc.Malware.Generic-9760307-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Generic-9760307-0
  • 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
0b6180fea2f2eb783f5bda16a3b3f9aadc8aaa21f7b3f16e95bf573cb2bafb66		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 18514 bytes

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