Emotet Office (OLE) / .DOCX malware analysis — malicious · 3121ce2e1565ddf9

MALICIOUS

Office (OLE) / .DOCX

142.8 KB Created: 2020-09-25 16:17:00 Authoring application: Microsoft Office Word

MD5: 9e835a749ae31e7f106200a9e30161ff SHA-1: 6fa82cbc1e8ee5edab5965adb4aca988e165a6cc SHA-256: 3121ce2e1565ddf9c54759018736d582cc86a5763599b415936da87ee166fecf

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC strongly indicate a malicious document. The presence of a Document_Open macro that uses CreateObject is a common pattern for Emotet downloaders. The document body appears to be obfuscated or corrupted, but the heuristics and ClamAV signature are sufficient for attribution. No scripts were extracted, but the VBA macro firings are indicative of a downloader.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9768415-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9768415-1
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` `24dc32bb0bf265d759acaab1be69526609f3f4e182439affcdf3ab2add969ffb`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	17320 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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