Office (OLE) / .DOCX malware analysis — malicious · fee4f66531abb150

MALICIOUS

Office (OLE) / .DOCX

176.4 KB Created: 2020-09-17 20:07:00 Authoring application: Microsoft Office Word

MD5: 9b0e522ea4d2c00187af3d3726e8284b SHA-1: 5b6c94a64c7da0ce36b315b227f468492411ae93 SHA-256: fee4f66531abb15058e37ea550aab747c84213322ca2e601d25dd1de87c7c234

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File

The file contains VBA macros, specifically a Document_Open auto-execution macro, which is a common technique for initiating malicious actions upon opening the document. The critical ClamAV detection and high heuristic firings indicate this is a downloader. The macro likely uses CreateObject to download and execute a second-stage payload, as suggested by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' and 'OLE_VBA_CREATEOBJ' heuristics.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763054-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763054-0
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` `620e9eb15c32ed012e3e43742d6a5833fa906ea09e2bf7ca9f4f384d7210c8d6`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21992 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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