Emotet Office (OLE) / .DOCX malware analysis — malicious · b12f771df24eb6c3

MALICIOUS

Office (OLE) / .DOCX

243.3 KB Created: 2020-09-17 06:16:00 Authoring application: Microsoft Office Word

MD5: a7e064a0fa24445f3f22e61d01637c72 SHA-1: a9711bb58702261c247b343b97589eaee76fa618 SHA-256: b12f771df24eb6c3dc5d839637eace60ec5627a149199735953d808e79878b31

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for OLE_VBA_MACROS, OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate malicious VBA code execution upon opening the document. The presence of a Document_Open macro and CreateObject calls suggests the macro is designed to download and execute a secondary payload, consistent with Emotet's typical behavior. The embedded URL, though benign in reputation, is noted as part of the document's structure.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02226-9938639-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02226-9938639-0
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` `8acac38431121e2787bcaf089ea6ff777ea901603bfdc5971f7059437b41c745`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20564 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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