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

Static analysis result for SHA-256 067f29b1fa0db6ed…

MALICIOUS

Office (OLE) / .DOCX

171.5 KB Created: 2021-01-22 12:16:00 Authoring application: Microsoft Office Word
MD5: 70d2490a40f0de588437a3f02c97b3ba SHA-1: 6ef7e19f547ea75fd6d23358eb68149edeb79fb8 SHA-256: 067f29b1fa0db6eda53b0f4eb12303b42eb5891eda2e699b7c0a827710ab61dc
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 (Document_Open). This macro utilizes CreateObject and obfuscated code, indicative of a downloader or droppper. The ClamAV detection name 'Doc.Malware.Emodldr-10033989-0' further supports its malicious nature. The primary function appears to be the execution of a secondary payload, likely downloaded from a remote source.

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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