Emotet Office (OLE) / .DOC malware analysis — malicious · c8a2f75c27ebfd8d

MALICIOUS

Office (OLE) / .DOC

191.2 KB Created: 2020-12-21 07:57:00 Authoring application: Microsoft Office Word

MD5: a0a4fcae2fc3c4c466c5090ab4003fc8 SHA-1: 31be0fd6ea78612754761c54ebcdd6be5a8be5c9 SHA-256: c8a2f75c27ebfd8df0a61e2cfc2e72e0ce7aa0df0edfe067843f0b9c46dfcb4e

240 Risk Score

Malware Insights

Emotet · confidence 95%

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature Doc.Downloader.Emotet-10024800-0. High-severity heuristics indicate the presence of VBA macros, specifically a Document_Open auto-exec macro that uses CreateObject. This suggests the macro is designed to download and execute a second-stage payload. The document body, though obfuscated, contains text related to Word errors, reinforcing the lure.

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` `7a8c63695effc84f38d7f8c89310731649327473f2252960d64e37918f44293d`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10361 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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