Emotet Office (OLE) / .DOCX malware analysis — malicious · c7db25cfd29e119c

MALICIOUS

Office (OLE) / .DOCX

154.9 KB Created: 2020-10-16 10:17:00 Authoring application: Microsoft Office Word

MD5: 446459b3fde33a5efcbfcec999e279e0 SHA-1: fd998c50eaf6a3ad82b22445a7b2495883853cc7 SHA-256: c7db25cfd29e119cdaeb8f214282a5e9ac3ed037f953d598deab8d916838a63e

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1140 Deobfuscate/Decode Files or Information

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious downloader. The presence of a VBA macro file named 'macros.bas' further supports this. The ClamAV signature 'Doc.Downloader.Emotet-9778520-0' directly attributes this sample to the Emotet family, which is known for its downloader capabilities.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9778520-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9778520-0
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` `d61826c134f7c008e59a413c892ffd79c11195763d747a6092f6a3ad25ed6af3`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15346 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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