Emotet Office (OLE) / .DOCX malware analysis — malicious · 8dc799a4d85eae5f

MALICIOUS

Office (OLE) / .DOCX

201.7 KB Created: 2020-12-22 06:39:00 Authoring application: Microsoft Office Word

MD5: 0204e6d69d807a3760a536634e032607 SHA-1: a1ca4d15051ebde4b7c906ac7287298907e3551e SHA-256: 8dc799a4d85eae5fcfe20d5eb6c20b50f85208035a476dc2925310af47bfe454

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1105 Ingress Tool Transfer

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 a VBA macro file (macros.bas) further supports this. The macro is designed to download and execute a second-stage payload, a common Emotet tactic. The document body, though heavily obfuscated, contains strings that appear to be part of the macro's execution flow.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-10024800-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-10024800-0
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` `87b72d633bd79d3d21c1246dbcc11e62ebdefc06e96dee650ec7c8e181386692`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16335 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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