Emotet Office (OLE) / .DOCX malware analysis — malicious · a0ef9fcda78c9700

MALICIOUS

Office (OLE) / .DOCX

182.5 KB Created: 2020-10-27 09:55:00 Authoring application: Microsoft Office Word

MD5: cb246e5bc421b92883d61119bba6d42a SHA-1: d492bcd92bc92afff83feddb1febd34c4fe87cf8 SHA-256: a0ef9fcda78c9700644ecd5b7f1088a2d3d69402f143c6d597d163ec8ec8f956

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 explicitly identifies this file as 'Doc.Downloader.Emotet-9784225-0', strongly suggesting the Emotet family. High-severity heuristics confirm the presence of VBA macros, specifically a Document_Open auto-execution macro that utilizes CreateObject, a common technique for downloading and executing secondary payloads. The obfuscated document body text, while unreadable, is consistent with macro-based lures. No scripts were extracted, but the VBA heuristics are sufficient for attribution.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
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` `d266e0e433b4f1ca206b8db182ee793bd3229a389f65ad6b52e9aace0436fd0a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	15938 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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