Emotet Office (OLE) / .DOCX malware analysis — malicious · f857002c29ef1a35

MALICIOUS

Office (OLE) / .DOCX

208.6 KB Created: 2020-12-22 21:50:00 Authoring application: Microsoft Office Word

MD5: 99fdbf6a0f75754262098cdaea05882e SHA-1: 2b72e24e613c6a25c6d5157f8bfd1c0f7e1b0c3c SHA-256: f857002c29ef1a357a541a2a1dc3821d6f7b739ac3602a22be8c6861d0f4b8b3

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including auto-execution via Document_Open and CreateObject calls, strongly indicate malicious intent. The presence of a Document_Open macro that likely executes code points to a downloader functionality, consistent with Emotet's typical behavior of fetching additional malware. The obfuscated document body text does not provide further context on the lure, but the technical indicators are clear.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `b559ca2a4b6431779fe74d7481a6f916cab3c2b891432c5ee8c97f5a35ecea25`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15388 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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