Office (OLE) / .DOCX malware analysis — malicious · 13b8d921ba75e923

MALICIOUS

Office (OLE) / .DOCX

168.5 KB Created: 2021-01-22 16:11:00 Authoring application: Microsoft Office Word

MD5: eec4b105832676cafe6a05cf81fc7e83 SHA-1: ddc8a1c48132bddb71407d413409403a788cb65f SHA-256: 13b8d921ba75e923bed58dbd4f76435ad3dab789947ffe7279fcd804cba1fda0

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The presence of a Document_Open macro and the CreateObject heuristic indicate that the document is designed to execute malicious VBA code upon opening. The VBA code is heavily obfuscated, but the structure suggests it attempts to download and execute a second-stage payload. The ClamAV detection of 'Doc.Malware.Emodldr-10033990-0' further supports the malicious nature of the file.

Heuristics 6

ClamAV: Doc.Malware.Emodldr-10033990-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emodldr-10033990-0
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` `5ed4257a756cf59fd0bdd4996a568d11e210a8cb1fd2c78a16a7c0bd2a73f2f9`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16688 bytes

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