Emotet Office (OLE) / .DOCX malware analysis — malicious · 8f3ce1e65c3303a8

MALICIOUS

Office (OLE) / .DOCX

158.5 KB Created: 2021-01-12 14:56:00 Authoring application: Microsoft Office Word

MD5: bdbca28b35df7dfc39d1c5ee10321f07 SHA-1: 316175e1aa51521dcadff6f44c5266896b935c23 SHA-256: 8f3ce1e65c3303a8f45d09cfdb4d86b3291bd84c6c424ebbc15805b3819d8425

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File T1105 Ingress Tool Transfer

The critical ClamAV detection and high-severity heuristics for VBA macros, specifically the Document_Open auto-execution and CreateObject calls, strongly indicate malicious intent. The presence of a VBA macro named 'macros.bas' further supports this. The primary function of the macro appears to be downloading and executing a second-stage payload, a common characteristic of Emotet. The embedded URL, though benign according to reputation, is included as an IOC.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `cd2cdccd599e42cfa9fbd13cb834d7d13272d1d23a56e4724093d32e3972c403`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	7306 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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