Office (OLE) / .DOCX malware analysis — malicious · 0519acd2d9cfe8d3

MALICIOUS

Office (OLE) / .DOCX

172.5 KB Created: 2021-01-22 12:16:00 Authoring application: Microsoft Office Word

MD5: ff3d1f6e62a3a6845352c02f0339742b SHA-1: 78a7b68aef1dea2cbffa418c1d260db89bab3068 SHA-256: 0519acd2d9cfe8d3c8a41d745658ab9a23106f1054d46ca6552636e074acf335

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious Office document containing VBA macros. The 'Document_open' macro is present and uses 'CreateObject', indicating it is designed to execute code. The ClamAV detection 'Doc.Malware.Emodldr-10033989-0' strongly suggests a known malware downloader. The VBA code appears to be obfuscated but its structure points towards downloading and executing a secondary payload.

Heuristics 6

ClamAV: Doc.Malware.Emodldr-10033989-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Emodldr-10033989-0
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` `57c5fc8ce17815567da52642c52710073a1f26f502815de80b26d094034f9496`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	16557 bytes

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