Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 0f71ea200947de11…

MALICIOUS

Office (OLE)

142.4 KB Created: 2020-10-15 06:34:00 Authoring application: Microsoft Office Word
MD5: cdcf5ecbc4ab65ac20441a778397a56e SHA-1: 85b1fe1ace5f3617a71dd5b2328eb4315840b8ee SHA-256: 0f71ea200947de112168208cdf07a6da33c51769d7f3cc03d41d100c7ce13a9f
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The sample contains VBA macros, including a Document_Open auto-execution macro, which is a common characteristic of Emotet. The VBA code uses CreateObject and appears to be obfuscated, suggesting it's designed to download and execute a secondary payload. The ClamAV detection further supports the Emotet family attribution.

Heuristics 6

  • ClamAV: Doc.Downloader.Emotet-9778165-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Downloader.Emotet-9778165-0
  • 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
aa3822bbb419da819c0009ca2a50458591c2a917d376ecb16e3e87f227973bcb		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 10774 bytes

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