Emotet Office (OLE) / .DOCX malware analysis — malicious · b790075cf1b5ae95

MALICIOUS

Office (OLE) / .DOCX

162.1 KB Created: 2020-10-16 14:09:00 Authoring application: Microsoft Office Word

MD5: 3b52d7f84e731ff94512312bcb447936 SHA-1: ddd331aea7b78ba7312d77b71baa90578cc0d725 SHA-256: b790075cf1b5ae9592d7b61d5513b6b4ae15e0df4e08226b9152f878e0ef49b3

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names Emotet, and the heuristics indicate the use of CreateObject and p-code execution, consistent with Emotet's typical behavior of downloading and executing further stages. The document body content is heavily obfuscated and does not provide clear user-facing text, but the presence of the Document_Open macro and the ClamAV signature are sufficient for attribution.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9778566-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9778566-0
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.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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.

Filename	Kind	Source	Size
`macros.bas` `29095f417e940309e4c3b74017a13ff70f85d23507d6b5296a03fa98c635a78b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15315 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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