Emotet — Office (OLE) / .DOC malware analysis

Static analysis result for SHA-256 5f8f8f8f2bd286d3…

MALICIOUS

Office (OLE) / .DOC

133.4 KB Created: 2020-09-29 04:17:00 Authoring application: Microsoft Office Word
MD5: fd045a25de87d2871b62aa9f2dcbfafc SHA-1: 14e11333a3bbe52db75ca744d60ac77415a27e4d SHA-256: 5f8f8f8f2bd286d3f5f76e6ca535978a9eccba49c5fb61817ef1d967a44d0ca5
202 Risk Score

Malware Insights

Emotet · confidence 95%

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

The sample is a malicious OLE document containing VBA macros, specifically triggering on Document_Open. The ClamAV detection explicitly identifies it as Emotet. The VBA code uses CreateObject and appears to be obfuscated, but the Document_Open subroutine is designed to execute malicious code, likely for downloading and executing a secondary payload. The embedded URL is benign and likely a false positive from the extraction process.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9769095-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9769095-0
  • 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
d04833e53843bfcf6544d888c124f488e78f247212586680bbec5bbafe93c514
vba-macro oletools.olevba.extract_macros (decoded VBA source) 6702 bytes