Emotet Office (OLE) / .DOCX malware analysis — malicious · 73b1ecd0729d4a67

MALICIOUS

Office (OLE) / .DOCX

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

MD5: be1b0bd504828ba35637837f1ee32daa SHA-1: 9e66257271a90a7deafaf0c0b084491b3fd081b8 SHA-256: 73b1ecd0729d4a6776f63d5ec7943f5914ff080311e5f670ab38a4991795d29d

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 heuristic identifies this file as Emotet, a known downloader. The presence of a Document_Open VBA macro, which is auto-executed, strongly suggests a malicious intent to download and execute a second-stage payload. The heuristic OLE_VBA_PCODE_AUTOEXEC_EXEC confirms the auto-execution of VBA code via CreateObject, a common technique for malware delivery.

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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