Emotet Office (OLE) / .DOCX malware analysis — malicious · a3ec8d007a38ecb5

MALICIOUS

Office (OLE) / .DOCX

162.7 KB Created: 2020-09-14 06:44:00 Authoring application: Microsoft Office Word

MD5: 15261601a7cecce7005de879ec3f20e4 SHA-1: cac8bb8d530b85512c80255edbaee07a078cfde4 SHA-256: a3ec8d007a38ecb5e5367c769af1c4ba2131bd44505bb8eb76c695c4e7a8da9a

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1566.001 Spearphishing Attachment

The file contains a critical ClamAV detection for Emotet, along with high-severity heuristics indicating the presence of a Document_Open VBA macro that uses CreateObject. This macro is designed to execute automatically upon opening the document. The extracted document body, though truncated, contains what appears to be obfuscated VBA code that likely reconstructs commands to download and execute a secondary payload. The presence of the 'macros.bas' artifact further confirms the macro-based nature of this malicious document.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9762310-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762310-0
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` `94aa0eae3715e5e4c777d8559a3d12a3d055d6c09f9bd5aa9415cdba60070681`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25226 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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