Emotet Office (OLE) / .DOCX malware analysis — malicious · b3367c32b211d1a3

MALICIOUS

Office (OLE) / .DOCX

164.5 KB Created: 2020-10-20 12:48:00 Authoring application: Microsoft Office Word

MD5: fe46655529ce6c3e15b39e0a832d8939 SHA-1: 50b8fddc03abfe078ab63fe64c8b18b8eadd13be SHA-256: b3367c32b211d1a338b9739a2a47b98efaaa7b8eecee17b0483558f7c1eccd61

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file contains a VBA macro that automatically executes upon opening, as indicated by the 'Document_Open' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristics. ClamAV detection explicitly identifies this as 'Doc.Downloader.Emotet-9780849-0', suggesting its purpose is to download and execute a second-stage payload. The presence of a large VBA macro and the specific ClamAV signature strongly point to the Emotet family.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9780849-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9780849-0
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` `a791bb7ba5242dbbc595d3114d3368d96d9feda91ba232c650f7097f210ce92c`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17778 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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