Emotet Office (OLE) / .DOCX malware analysis — malicious · 3f5284458a0d2d7d

MALICIOUS

Office (OLE) / .DOCX

191.7 KB Created: 2020-10-01 13:24:00 Authoring application: Microsoft Office Word

MD5: 46d69f8e1deebb60b276e62047b7ea8e SHA-1: bc3590512e097608b61118c4d7079153daa7a1c9 SHA-256: 3f5284458a0d2d7d50d7487391aae521f625a8920bfe03a7c88d412f8c17699e

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1204.002 Malicious File

The critical ClamAV heuristic identifies this file as Emotet, a known downloader. High-confidence heuristics indicate the presence of VBA macros, specifically a Document_Open auto-execution macro that uses CreateObject. This suggests the macro is designed to download and execute a second-stage payload. The document body content appears to be obfuscated or corrupted, but the presence of VBA macros and the ClamAV detection strongly point to a malicious downloader.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9770099-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9770099-0
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` `036fd4509daa7ddddbb4b351244a67d134d9405ade9668761579d4b986a83b62`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10439 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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