Emotet Office (OLE) / .DOC malware analysis — malicious · 91b86396f6fbad5e

MALICIOUS

Office (OLE) / .DOC

187.5 KB Created: 2020-09-16 22:59:00 Authoring application: Microsoft Office Word

MD5: 40754e2e1642b7e19877acadc7d11e8e SHA-1: c4ababe8ab4439f4c9b5fd3d6311ce73ccd5a013 SHA-256: 91b86396f6fbad5eee49da6de0327e1be12b6308d05a6039a7be2744afc5aba4

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate a malicious document. The presence of VBA macros, specifically an auto-executing Document_Open macro that uses CreateObject, is characteristic of Emotet downloaders. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure, but the technical indicators are sufficient for attribution.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9762305-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9762305-0
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` `c74a4e0e1e8046236a4698925940d43110d502cff010754883e948c4e1efb894`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19088 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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