Office (OLE) / .DOCX malware analysis — malicious · 6dded40623ac122d

MALICIOUS

Office (OLE) / .DOCX

172.9 KB Created: 2020-09-16 13:35:00 Authoring application: Microsoft Office Word

MD5: e8937f73f2ab2b702a458a1b1aae4281 SHA-1: 9119b64692a9e40b9773745b69f2e5d3c06b680f SHA-256: 6dded40623ac122d9e3576bcd46f96ef3ce7ce260511f5cf1ee0865a08d835d4

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to execute malicious code upon opening the document. The ClamAV detection 'Doc.Malware.Emotet-9762108-0' strongly suggests a known malware family, likely Emotet, which often uses this technique to download further payloads. The macro's obfuscated nature and the use of string concatenation for potentially malicious URLs or commands warrant further investigation.

Heuristics 6

ClamAV: Doc.Malware.Emotet-9762108-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762108-0
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.
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` `0bb2e800f836433b719494fb3a2cf1fc895dd947fc7213e26f377d26b01e1554`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	22004 bytes

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