Emotet Office (OLE) / .DOCX malware analysis — malicious · f1128b4b115af957

MALICIOUS

Office (OLE) / .DOCX

137.5 KB Created: 2020-09-28 21:18:00 Authoring application: Microsoft Office Word

MD5: 91e38457922fcfc65cd4b64c9b2095de SHA-1: 385f03c0f2a2e87a36c39f25bd07f9ea62d431f1 SHA-256: f1128b4b115af957d794812accfa22e05ddd588d3fd52e5c72ddc7429468142d

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 a malicious Microsoft Office document containing VBA macros. The 'Document_Open' macro is present and configured to auto-execute, indicating an attempt to run malicious code upon opening. Heuristics suggest the use of CreateObject and p-code execution, common for Emotet malware. The presence of the 'macros.bas' file and the ClamAV detection further support the Emotet family attribution. The document body content is obfuscated and does not provide clear user-facing text, but the macro execution is the primary indicator of malicious intent, likely to download and execute a secondary payload.

Heuristics 7

ClamAV: Doc.Malware.Emotet-9769000-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9769000-0
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` `af1832d1f4c91fc85d2c99e2822b1b7480a5e715a732a96dc374f162b3694b82`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6632 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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