Emotet — Office (OLE) malware analysis

Static analysis result for SHA-256 705ad7747c2585d4…

MALICIOUS

Office (OLE)

132.4 KB Created: 2020-10-14 22:43:00 Authoring application: Microsoft Office Word
MD5: 24dc4025903d75e171b81f01135d02dc SHA-1: 7c7c4073efe2923592b503d9b2aee3d95ab65557 SHA-256: 705ad7747c2585d4e899fc0a28ba812f537bd411c641381ea354969548b9c89e
202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK
T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059 Command and Scripting Interpreter

The sample contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating malicious intent. The ClamAV detection and heuristic firings strongly suggest this is an Emotet variant. The VBA script is heavily obfuscated but the presence of CreateObject and the overall structure are consistent with Emotet's typical behavior of downloading and executing further payloads.

Heuristics 6

  • ClamAV: Doc.Malware.Emotet-9777973-1 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Doc.Malware.Emotet-9777973-1
  • 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
81a3dc4def841a3eb7abaeae74c90c63aaad54c35a57b1122de574a08633807d		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 9342 bytes

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