Emotet Office (OLE) / .DOCX malware analysis — malicious · bf7e95700013ef6e

MALICIOUS

Office (OLE) / .DOCX

164.5 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word

MD5: 1378ac635d9fad885b14b20d9a6ac84b SHA-1: 9bf711d39940de33de4f8c5c12f7d884b9209618 SHA-256: bf7e95700013ef6ee20e1fb88967197ee7e423c81e9e9a4548084bfde2e30034

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, including `Document_Open` and `CreateObject` calls, strongly indicate malicious intent. The presence of a `macros.bas` file and the `OLE_VBA_PCODE_AUTOEXEC_EXEC` firing confirm the use of auto-executing VBA code. The document body, though heavily obfuscated, appears to contain obfuscated code, likely related to the execution of the VBA macros. The overall behavior aligns with Emotet's typical delivery mechanism of using macro-enabled documents to download and execute further stages.

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` `aaf531f7a5bc5489efc2142934ae4807c7a8fc52a02b1483f9210c80918c01e7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16228 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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