Office (OLE) / .DOCX malware analysis — malicious · 88f27d4beb9a97b1

MALICIOUS

Office (OLE) / .DOCX

215.1 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word

MD5: 09bbc9f3771598e4803570e40c1db530 SHA-1: 819989266b8b0df0dcaf8367f26d2ef78362b11b SHA-256: 88f27d4beb9a97b1f8fe1095cb44670077433e0e98ee762d7e74613878998265

242 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Office document containing VBA macros. The 'Document_open' macro is present and configured to execute automatically when the document is opened. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. The ClamAV detection as 'Doc.Downloader.Generic' further supports this. No specific IOCs like URLs or file paths were directly extracted from the script, hence the family is unknown.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19249 bytes

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