Emotet Office (OLE) / .DOCX malware analysis — malicious · 21eb469426dab3a2

MALICIOUS

Office (OLE) / .DOCX

191.1 KB Created: 2020-10-01 13:24:00 Authoring application: Microsoft Office Word

MD5: 86dc255ace68ccf05e4ca6833a7e2c40 SHA-1: 1e34c707f08ff4545bcccdb0a395b7225f78a74d SHA-256: 21eb469426dab3a249476c273f96a3bc4989d6212b787bc6142a5223251d6a72

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 OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate a macro-based downloader. The presence of a Document_Open macro that uses CreateObject is a common Emotet delivery technique. The extracted ClamAV signature further supports the Emotet family attribution. The document body content is heavily obfuscated and does not provide clear user-facing text, but the macro execution is the primary indicator of malicious intent.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9770099-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9770099-0
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` `036fd4509daa7ddddbb4b351244a67d134d9405ade9668761579d4b986a83b62`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10439 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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