Emotet Office (OLE) / .DOCX malware analysis — malicious · f4cd872a1e57acff

MALICIOUS

Office (OLE) / .DOCX

163.5 KB Created: 2020-10-27 13:32:00 Authoring application: Microsoft Office Word

MD5: 58ee356c24326d0cf817af40c822d7bf SHA-1: 38d936a4f3c112b8e39e4ef0b305c77f58b67f8a SHA-256: f4cd872a1e57acff73ad28968e9eabb9892fba1d5e5387a82b914b5c92f6bce7

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment 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 a malicious downloader. The presence of a VBA macro in the macros.bas file, coupled with the 'Doc.Downloader.Emotet' ClamAV signature, points to the Emotet family. The macro likely executes code to download and run a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Emotet-9784225-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Emotet-9784225-0
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` `aaf531f7a5bc5489efc2142934ae4807c7a8fc52a02b1483f9210c80918c01e7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16228 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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