Emotet Office (OLE) / .DOCX malware analysis — malicious · 9166a4f2e7f6b565

MALICIOUS

Office (OLE) / .DOCX

176.6 KB Created: 2020-10-20 22:39:00 Authoring application: Microsoft Office Word

MD5: f1884e0063d7a89e309c9ecf581bc1c2 SHA-1: 31531885d8a74bca8ee984860be724d095e79ad0 SHA-256: 9166a4f2e7f6b56512ad7185a5b2930a5ab9c6e592a2def1ee629d5c553d9a7f

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 an auto-executing Document_Open macro that uses CreateObject, strongly indicate Emotet activity. The presence of a VBA macro file (macros.bas) further supports this. The document body content is heavily obfuscated and unreadable, but the technical indicators point to a macro-based downloader. The primary IOC is the ClamAV detection signature.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9781039-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9781039-0
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` `130bc91dd8b5ad391a87daabf287b6e2ceed1d78136a29ff57bedf25aa736586`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18991 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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