Emotet Office (OLE) / .DOCX malware analysis — malicious · 3aaadd3bd8a850dd

MALICIOUS

Office (OLE) / .DOCX

151.1 KB Created: 2020-10-01 07:06:00 Authoring application: Microsoft Office Word

MD5: cd55c62ee0a9ff71903b00a8503e241f SHA-1: b9038d6504098fcc6d3167fcfecef45fe4ae264a SHA-256: 3aaadd3bd8a850dd5c5e256e30644960bd547c21783adaf5da9038f1f9e94acc

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' further supports this. The ClamAV signature 'Doc.Malware.Emotet-9770156-0' directly attributes this to the Emotet family. The primary attack pattern involves leveraging the auto-executing macro to likely download and execute a secondary payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9770156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9770156-0
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` `edcbc228f949e002f32423fcc2aae89e10357cf04ecc19d5df06e1df6cb28a25`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10406 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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