Office (OLE) / .DOCX malware analysis — malicious · 8ec484a33a9d6faa

MALICIOUS

Office (OLE) / .DOCX

206.9 KB Created: 2020-10-28 18:42:00 Authoring application: Microsoft Office Word

MD5: 23161d44e0cd961ae72a2c6d5c886b0b SHA-1: b1e15dcc7247d6ea3308f1967cbd551317f8b8ca SHA-256: 8ec484a33a9d6faa812349834788233eb6831589c4190ec8431302da9c9e0757

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment T1059.001 PowerShell

The sample is a Microsoft Office document containing a VBA macro that automatically executes upon opening. Heuristics indicate the macro uses CreateObject and p-code auto-execution, typical of a downloader. ClamAV detection confirms this as a downloader. The document body content is unreadable and likely obfuscated or irrelevant, but the presence of the auto-executing macro strongly suggests a malicious intent to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
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` `e949db65d47346cd391eb9bc49c66a713688cfea31c7cb788a6d1dce1ea9efc6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18584 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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