Emotet Office (OLE) / .DOCX malware analysis — malicious · f8b2d066f5a3d657

MALICIOUS

Office (OLE) / .DOCX

145.5 KB Created: 2020-09-29 22:29:00 Authoring application: Microsoft Office Word

MD5: 7d23cb8063ccd89d7ce68fb639696051 SHA-1: ee908749853cc32c6c979463b0f875bb4cfb7eb2 SHA-256: f8b2d066f5a3d657edb1544f9df31a9a7b3121c5c14ddb1b96b50ddd69b44c22

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with a specific Emotet signature. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This suggests the macro is designed to run malicious code upon opening the document, likely to download and execute a second-stage payload. The presence of the 'macros.bas' artifact further supports this. The document body's obfuscated nature does not provide direct clues to the lure, but the technical indicators strongly point to Emotet's typical delivery mechanism.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9769425-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9769425-0
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` `236c4e22a64ac61d77ecd3058e389c25a424fb288d33e5ff92abfd3f1b24ea8c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10347 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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