Office (OLE) / .DOCX malware analysis — malicious · f6e3ab2fb75c4dad

MALICIOUS

Office (OLE) / .DOCX

170.3 KB Created: 2021-01-05 12:07:00 Authoring application: Microsoft Office Word

MD5: 64718e763226d5481af38d7423a725df SHA-1: 6f9a903e1a45461f58eb5933bd1b9d7cebb07a04 SHA-256: f6e3ab2fb75c4dad953b4eabf8acdbdf4a8a40840e32e3f178fc2b044b27dec4

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Word document containing VBA macros, specifically a Document_Open macro that utilizes CreateObject. This indicates the macro is designed to execute automatically when the document is opened, likely to download and execute a second-stage payload. The ClamAV detection as 'Doc.Downloader.EmotetRed02224-9938637-0' strongly suggests a downloader functionality, consistent with Emotet family characteristics.

Heuristics 7

ClamAV: Doc.Downloader.EmotetRed02224-9938637-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.EmotetRed02224-9938637-0
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` `5fd199a84582bf2c4248191e49df05fe3a9d17ab4a6f639ead9a581ea6be129f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	10799 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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