Emotet — Office (OLE) / .DOCX malware analysis

Static analysis result for SHA-256 09c76d7cecbd8c5f…

MALICIOUS

Office (OLE) / .DOCX

156.4 KB Created: 2020-10-19 09:08:00 Authoring application: Microsoft Office Word
MD5: d6033d366289fd90962fbb85cdf8143b SHA-1: d83cf356031f3651d167c8ad1a7aa1665a7fa33f SHA-256: 09c76d7cecbd8c5f6927f39d9078d0c38127c35bb167f7bcd2166954714bf2ce
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common technique for Emotet. The ClamAV detection explicitly identifies it as 'Doc.Downloader.Emotet-9780400-0'. The obfuscated VBA script likely attempts to download and execute a second-stage payload, as indicated by the CreateObject heuristic and the presence of macro code.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
  • 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
08c6c84a482c5fada7b89e8c1708220cc71cf554f9428ae2b50042c0f6be9085
vba-macro oletools.olevba.extract_macros (decoded VBA source) 15508 bytes