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

Static analysis result for SHA-256 5e1bdf494e8524c9…

MALICIOUS

Office (OLE) / .DOCX

184.5 KB Created: 2020-10-21 05:24:00 Authoring application: Microsoft Office Word
MD5: 650883ddca97c4918ad861254cb3eae6 SHA-1: 014191051fd600dc9f81085de4be0510855c4ff3 SHA-256: 5e1bdf494e8524c991cf1983052fec5a71a43b6457c735840ebc901f9341cf0a
202 Risk Score

Malware Insights

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

The file is a malicious Office document containing a VBA macro that automatically executes when the document is opened. The macro uses CreateObject and appears to be designed to download and execute a second-stage payload, as indicated by the ClamAV detection name 'Doc.Dropper.EmotetiBlueUpdate1020-9780531-0'. The specific payload or download URL is not directly visible in the provided script excerpts, which are heavily obfuscated.

Heuristics 6

  • ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
  • 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
c2d782ff362afeab0ff3ffdb3997adeebbc3bedc56fb1ea2722e18a99469723b		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 20637 bytes

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