Emotet Office (OLE) / .DOCX malware analysis — malicious · 0a0f920896176c79

MALICIOUS

Office (OLE) / .DOCX

205.5 KB Created: 2020-10-28 12:00:00 Authoring application: Microsoft Office Word

MD5: cd2023a4879f9a704f3441a47b8d7d6a SHA-1: 3b4e051e4be3c7be022c427b5f2982f13e729961 SHA-256: 0a0f920896176c798ee972d9e8f0455f8d39552c3304ed33f5b5a6776db0b6ef

202 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample was detected as malicious by ClamAV with the signature 'Doc.Malware.Emotet-9784450-1', strongly indicating the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open macro that uses CreateObject to execute code. The VBA script itself is heavily obfuscated but appears to construct and execute strings, consistent with downloading and running a secondary payload. The presence of VBA macros and the likely execution of code points to the Spearphishing Attachment initial access vector.

Heuristics 6

ClamAV: Doc.Malware.Emotet-9784450-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9784450-1
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.

Filename	Kind	Source	Size
`macros.bas` `b98bc6262a06d3ed5a9ef1ffbdbcd180eadae66998aa40fa38b234fae6ec34b7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17061 bytes

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