Office (OLE) / .DOCX malware analysis — malicious · b2e9ef81af6c4686

MALICIOUS

Office (OLE) / .DOCX

67.5 KB Created: 2024-09-18 21:21:00 Authoring application: Microsoft Office Word

MD5: b066bbea5d6502655a1880d7987ae7c7 SHA-1: 4b97e1115fca394fcbc5e512e8acccc109699100 SHA-256: b2e9ef81af6c4686944e5c589d420fc9dffbf9af7afe3e1e913cece273626070

188 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The file is a Microsoft Office Word document containing embedded VBA macros. The 'Document_Open' macro is present and configured to execute automatically upon opening the document, indicated by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. This macro uses 'CreateObject' to likely download and execute a second-stage payload. The presence of a 'macros.bas' file further confirms the macro content. The document body contains only '1', providing no contextual lure.

Heuristics 7

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.
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
Environ() call (env variable access) low OLE_VBA_ENVIRON

Environ() call (env variable access)
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` `a4b39a81ac54587a2c5784770030aae081c40f679e1854b1346d961138a5094e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1888 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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