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

Static analysis result for SHA-256 18eeb3c4acd968e5…

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2021-01-22 12:16:00 Authoring application: Microsoft Office Word
MD5: c2c345d912d14ff35d88606dc4faa1ba SHA-1: 239f1194dff12e2cd96614c10c6511403182e2f5 SHA-256: 18eeb3c4acd968e5fb4a847ef4eb4953690be2b5a9ad36d6f82a9cbc7caa7a53
202 Risk Score

Malware Insights

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample contains a VBA macro that is automatically executed upon opening the document, as indicated by the Document_Open heuristic. The macro uses CreateObject and appears to be heavily obfuscated, suggesting an intent to download and execute a secondary payload. The ClamAV detection name 'Doc.Malware.Emodldr-10033989-0' further supports its malicious nature.

Heuristics 6

  • ClamAV: Doc.Malware.Emodldr-10033989-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emodldr-10033989-0
  • 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
57c5fc8ce17815567da52642c52710073a1f26f502815de80b26d094034f9496		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 16557 bytes

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