Office (OLE) / .DOCX malware analysis — malicious · 7d29e749c79d53fc

MALICIOUS

Office (OLE) / .DOCX

197.6 KB Created: 2020-09-16 07:09:00 Authoring application: Microsoft Office Word

MD5: 2b194c9efb3734833e634789c4e655d8 SHA-1: f9b94e5627f8ca1355d3103b50747c7b43c570e7 SHA-256: 7d29e749c79d53fc5303ab43bed236a5f884e21617771cce4518860bd7bec1f3

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample contains VBA macros, including a Document_Open macro, which is a common technique for executing malicious code automatically when the document is opened. The presence of CreateObject calls and p-code auto-execution further indicates malicious intent. The ClamAV detection name 'Doc.Malware.Emotet-9762400-0' strongly suggests Emotet, a well-known banking trojan and downloader. The script's obfuscated nature and reliance on string concatenation for potentially malicious commands necessitate caution, but the overall pattern points to a downloader attempting to fetch and execute further malware.

Heuristics 6

ClamAV: Doc.Malware.Emotet-9762400-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emotet-9762400-0
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` `7c58c4b09e28ace19eb6117ae115fc2b8ebe509e6804a2a36cc1706dcd36fda5`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	25351 bytes

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