Office (OLE) / .DOCX malware analysis — malicious · 249cf1424893feb2

MALICIOUS

Office (OLE) / .DOCX

214.7 KB Created: 2020-09-21 07:35:00 Authoring application: Microsoft Office Word

MD5: 3ef65f19cbdfedef1e7c9bf07451dae7 SHA-1: 6c0ac57aa0930b8cbe2d2407c5343c7a56849d0f SHA-256: 249cf1424893feb2001cad2ac3619c3715d1d5c8c40587bddc6b5b3e29eb2f8d

280 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1140 Deobfuscate or Obfuscate

The sample is a Microsoft Office document containing a high-confidence VBA macro that automatically executes upon opening. Heuristics indicate the use of CreateObject and GetObject, common for downloading and executing payloads. ClamAV detection as 'Doc.Downloader.Generic' further supports this. The embedded URL, though marked benign, is often a placeholder or part of a larger obfuscation scheme. The VBA macros are the primary mechanism for delivering a secondary malicious payload.

Heuristics 8

ClamAV: Doc.Downloader.Generic-9764473-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9764473-0
Document_Open macro high OLE_VBA_DOCOPEN

Document_Open macro
CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
GetObject call high OLE_VBA_GETOBJ

GetObject 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` `a72546be4835befa0cd5934bb3d180228dbaffbae6f31f70f11c03f05171f092`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19249 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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