Emotet Office (OLE) / .DOCX malware analysis — malicious · a05e5c6098ba14cb

MALICIOUS

Office (OLE) / .DOCX

153.5 KB Created: 2020-10-19 12:20:00 Authoring application: Microsoft Office Word

MD5: a42fb1649e0fd8f3096a60d059327966 SHA-1: fbf103b30b2d1621ee6fc311debc42fd3f31e99d SHA-256: a05e5c6098ba14cba82976f163c619e06db72ff518169f6f799e8c89f1fd0c7d

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 and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate a malicious macro downloader. The presence of a VBA macro with auto-execution and execution tokens, coupled with the ClamAV signature for Emotet, points to this family. The document body, though heavily obfuscated, contains strings that may be related to macro execution or payload delivery. The primary function appears to be the execution of a VBA macro that likely downloads and executes a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9780400-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9780400-0
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` `1b934c7a6a945d183f556fc460816db0116e14a6233b4c84dca18770500f607e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15515 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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