Emotet Office (OLE) / .DOCX malware analysis — malicious · 93add3f9a6eb8a52

MALICIOUS

Office (OLE) / .DOCX

185.0 KB Created: 2020-10-21 05:24:00 Authoring application: Microsoft Office Word

MD5: 88a44684074c67cfd7a92494f9b2c6cd SHA-1: 3e8ac6dae2d6d66d5bb361b81c6eafbdde334aa5 SHA-256: 93add3f9a6eb8a5206d09393a24640c68f0e49f34a92bd400d53af71bc0d5c32

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 indicate that this DOCX file contains a malicious VBA macro designed to execute automatically upon opening. The macro's intent is to create an object and likely download and execute a second-stage payload, as suggested by the 'Doc.Dropper' classification. The presence of the 'macros.bas' artifact further supports this. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure.

Heuristics 7

ClamAV: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Dropper.EmotetiBlueUpdate1020-9780531-0
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` `c2d782ff362afeab0ff3ffdb3997adeebbc3bedc56fb1ea2722e18a99469723b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	20637 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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