Emotet Office (OLE) / .DOCX malware analysis — malicious · a9d1a8ff09fa0967

MALICIOUS

Office (OLE) / .DOCX

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

MD5: 1eaf0da85e6c1afc8f35b54aec07a893 SHA-1: 34940bf8755e5f324b1f3c192c13407b15bf1818 SHA-256: a9d1a8ff09fa0967ed2bbcd45b156698c20fec11fb07d5397bcfd5b8ffba1737

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 in the 'macros.bas' file, combined with the ClamAV signature, points to the Emotet family. The macro is designed to execute automatically upon opening the document, likely to download and run a secondary payload.

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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