Office (OLE) / .DOCX malware analysis — suspicious · 7666f3d19250bc9b

SUSPICIOUS

Office (OLE) / .DOCX

335.0 KB Created: 2021-05-25 08:31:00 Authoring application: Microsoft Office Word

MD5: 2945ec5ca668fee27e326ab8c0043e2a SHA-1: d23b57b25096e93d33da65481246f15d0de0dbb7 SHA-256: 7666f3d19250bc9b6d75e1b081407ea6a71c81f22a2c027d85b6445a65a0f247

50 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The VBA macro contains obfuscated code that concatenates strings to construct a URL, likely for downloading a second-stage payload. The AutoOpen function is triggered, indicating an attempt to execute malicious code upon opening the document. The presence of VBA macros and the AutoOpen execution strongly suggests a spearphishing attachment attack vector.

Heuristics 3

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 project contains no executable statements low OLE_VBA_MACROS

Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.
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` `fd972c2c410526b76b71c768b1dae2b24f95cf5a19ce14d0acf86a57edb4b1aa`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	5432 bytes

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