Office (OLE) / .DOCX malware analysis — malicious · 374a3742f2987f26

MALICIOUS

Office (OLE) / .DOCX

154.5 KB Created: 2020-09-14 22:09:00 Authoring application: Microsoft Office Word

MD5: 0844fcd92d27773d9196f9f83f0d830c SHA-1: a8a997009d350d60687c171c6a964222c3db4173 SHA-256: 374a3742f2987f267779f65990c040faa7f1f456304706c295fec11f11e4db91

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample is a malicious DOCX file containing VBA macros. The critical ClamAV detection and high-severity heuristics for OLE_VBA_DOCOPEN, OLE_VBA_CREATEOBJ, and OLE_VBA_PCODE_AUTOEXEC_EXEC indicate that the Document_Open macro is likely responsible for executing malicious code. The presence of 'macros.bas' further supports this. The script content, though truncated, suggests it attempts to construct and execute commands, potentially downloading a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Generic-9760527-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-9760527-0
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.
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` `bf2dc6e4793502154f28a14458af4f5198ccc48932a5641a4c34f7f1fcdc0c82`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18582 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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