Office (OLE) / .DOCX malware analysis — malicious · c41f70d35decb29c

MALICIOUS

Office (OLE) / .DOCX

176.6 KB Created: 2020-09-28 12:01:00 Authoring application: Microsoft Office Word

MD5: 0a6d4d475f50dad97353f8663592a044 SHA-1: 0a0f6200103d6ffc63c99d1a07948e3f0293694d SHA-256: c41f70d35decb29c3b6e8f406423d0747fb4bdbdd66c54a01cf86567c4ce603a

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file contains VBA macros, specifically a Document_Open macro that utilizes CreateObject, indicating an auto-execution attempt. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests its purpose is to download and execute additional malicious content. No specific family could be identified, but the behavior is consistent with a downloader. The document body content is obfuscated and does not provide further clues.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9768640-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9768640-0
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` `41d5da1c3b5ac37936783dc0f6deb9a466b44f4833e7f3cfb69b25cedc4e48ca`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	6262 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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