Emotet Office (OLE) / .DOCX malware analysis — malicious · 5a21b78c187e0cd0

MALICIOUS

Office (OLE) / .DOCX

134.0 KB Created: 2020-09-28 07:04:00 Authoring application: Microsoft Office Word

MD5: af6f3f443343aaae48fed30e0ed4635c SHA-1: a6efce60a0bc25b7b326de1521348dc39bbb9e13 SHA-256: 5a21b78c187e0cd09d9dd83b932323a4622d7fa09a1cbd3be8b394009b98c35c

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 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 extracted document body content appears to be obfuscated or corrupted, providing no direct clues to the lure. No scripts were extracted, but the heuristics point to a VBA macro that likely downloads and executes a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9768657-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9768657-0
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` `e75df2f1d58eb5949c0678a2356db3178c4d0bfd05af2a59d3cebacf3557baf1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6244 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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