Office (OLE) / .DOCX malware analysis — malicious · 924ebcadb293e6b4

MALICIOUS

Office (OLE) / .DOCX

158.1 KB Created: 2020-09-17 16:56:00 Authoring application: Microsoft Office Word

MD5: 9bc66b6b816e5a0d6cc717971a743465 SHA-1: df40f06b40d839ce8e2e48b5dc03f2dc0b657209 SHA-256: 924ebcadb293e6b49b96d80f197c81ced0ee734dcd4d4300107212512115d12d

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is identified as malicious by ClamAV with the signature 'Doc.Downloader.Generic-9763026-0'. Static analysis revealed the presence of VBA macros, specifically a 'Document_Open' macro that utilizes 'CreateObject'. This indicates the macro is designed to execute code upon opening the document, a common technique for downloading and executing further malicious payloads. The heuristic firings strongly suggest a downloader functionality.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763026-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763026-0
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` `d72f45ff27ad6de46c4e2f18d1cb6c13c4a0c6682629fccb5d0be1c4ab69db7a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19870 bytes
Detection ClamAV: No threats found Obfuscation or payload: likely Carved artifact contains 20 long base64-like blob(s). Carved macro source contains an auto-exec entry point and execution/download terms.

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