Emotet Office (OLE) / .DOCX malware analysis — malicious · 479f549b2b68d98c

MALICIOUS

Office (OLE) / .DOCX

167.4 KB Created: 2020-09-24 20:34:00 Authoring application: Microsoft Office Word

MD5: f742e6ff5eb079fde81155b6f7ed5aac SHA-1: 4e2de2e90dc756ef5ebb670db4abc19dae594bbc SHA-256: 479f549b2b68d98c8a2c7ead53fb42e5426084076981572c022aa746fb606b9c

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro, identified as macros.bas, and the detection of an embedded URL, further support this. The document body, though heavily obfuscated, appears to contain fragments of PowerShell commands, suggesting the macro's purpose is to execute a PowerShell script. This script likely downloads and executes a second-stage payload, a common Emotet tactic.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
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` `20065c1f06a22de094d8fc279802a5adedc919206be7ae0d9cd9ee9d315ea30b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25868 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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