Office (OLE) / .DOCX malware analysis — malicious · 8d864cfdc49b7930

MALICIOUS

Office (OLE) / .DOCX

34.0 KB Created: 2023-10-10 20:22:00 Authoring application: Microsoft Office Word

MD5: c6cfb883b5b0ee686f4688134acbce60 SHA-1: 3f132a74707fe1493843f64ea2c936a8ed22d755 SHA-256: 8d864cfdc49b7930718cb9c2e6e08324b7df6a5e1860897b8c4d9cf88bd64020

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1204.002 Malicious File

The sample is a malicious Office document containing VBA macros. A critical heuristic firing indicates a Shell() call within the VBA code, and a high-severity heuristic confirms VBA p-code auto-execution with execution tokens. This suggests the macro is designed to execute arbitrary commands, likely to download and run a secondary payload. No specific family could be identified, but the technique is common for initial access.

Heuristics 7

Shell() call in VBA critical OLE_VBA_SHELL

Shell() call in VBA
Reference to Windows Script Host high SC_STR_WSCRIPT

Reference to Windows Script Host
Workbook_Open macro high OLE_VBA_WBOPEN

Workbook_Open macro
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.
Suspicious extracted artifact high EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.
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` `b28901506f40dca546e050d97b0298843174aae8cdbf58a75af61126c4ab3e71`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	842 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved macro source contains an auto-exec entry point and execution/download terms.

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