Emotet Office (OLE) / .DOCX malware analysis — malicious · c3474c39b7b924e4

MALICIOUS

Office (OLE) / .DOCX

187.5 KB Created: 2020-09-16 18:57:00 Authoring application: Microsoft Office Word

MD5: 70f4ba04aec5e04dc9199ca76fa15794 SHA-1: 00870c89339427ab2ccb4180dc6206c80ce516f1 SHA-256: c3474c39b7b924e42872d74244d0854423f1a19a0bc7bf53337994e269cad134

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1105 Ingress Tool Transfer

The file contains VBA macros, specifically a Document_Open auto-exec macro, which is a strong indicator of malicious intent. The ClamAV detection explicitly names this as Emotet, a known downloader family. The macro's ability to execute code via CreateObject and its p-code structure further support this. The primary function appears to be downloading and executing a second-stage payload, consistent with Emotet's behavior.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9762284-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9762284-0
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` `c8eacd47a01532c076db7a43a0d927f95cb78ca92fb9fc841101993b58287d9b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19132 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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