Emotet Office (OLE) / .DOCX malware analysis — malicious · f4b082d6bab97726

MALICIOUS

Office (OLE) / .DOCX

166.9 KB Created: 2020-09-24 20:34:00 Authoring application: Microsoft Office Word

MD5: 12d043d249bfdd084bde090880a01332 SHA-1: ab45a45e005a236bda123a09b6309686447630eb SHA-256: f4b082d6bab97726e8a22fb591e560084531d2d54bcddb06a5b3bf16cdd32568

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for VBA macros, including an auto-executing Document_Open macro and CreateObject calls, strongly indicate malicious intent. The presence of the 'macros.bas' artifact further supports this. The document body, though heavily obfuscated, appears to contain encoded strings that likely form a PowerShell command, suggesting the VBA macro's purpose is to download and execute a second-stage payload. The family is identified as Emotet based on the ClamAV signature.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9765780-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9765780-0
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` `20065c1f06a22de094d8fc279802a5adedc919206be7ae0d9cd9ee9d315ea30b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25868 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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