Emotet Office (OLE) / .DOCX malware analysis — malicious · b7ef6487132afa59

MALICIOUS

Office (OLE) / .DOCX

163.9 KB Created: 2020-09-15 19:31:00 Authoring application: Microsoft Office Word

MD5: 2acfdcbcf683fb9b6573d1536c105633 SHA-1: ec7739a3b722a3909c01cbd57b8d1e0c9fe39699 SHA-256: b7ef6487132afa596eee56ae8e75e130b2cb003eb1f2b2a765401d651fa6a61b

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 explicitly identifies this file as 'Doc.Downloader.Emotet-9761754-0'. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject. This indicates the macro is designed to run automatically upon opening the document and likely executes a second-stage payload. The presence of the Emotet family name in the ClamAV signature strongly supports this attribution.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9761754-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9761754-0
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` `75714e73d3e8750b3760209a7997fccc8b6d96f31b59fa1d20ad2b0ef4583864`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25430 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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