Office (OLE) / .DOCX malware analysis — malicious · 8669123b64918b7f

MALICIOUS

Office (OLE) / .DOCX

162.2 KB Created: 2020-09-17 22:23:00 Authoring application: Microsoft Office Word

MD5: ae9d42d1ca5a52d135f6c30afcf6cd88 SHA-1: ffbd9855dc3c8842dd8ac7040f5e336acb25080a SHA-256: 8669123b64918b7f8a0706453cdfb5886208f5e31dcf5d89e598b2ecd0dc025f

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document containing VBA macros, specifically triggering on the Document_Open event. Critical heuristics indicate the presence of a downloader, and ClamAV detection confirms this as 'Doc.Downloader.Generic-9763113-0'. The macros utilize CreateObject, a common technique for executing code and downloading further stages. The document body is heavily obfuscated and unreadable, providing no direct clues to the lure, but the macro execution and downloader heuristic strongly suggest a malicious intent to fetch and run additional malware.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763113-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763113-0
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` `98a29bdf4abf669a96318f520c9bfe3aa10e950f57f7c585bdcdcff6e6ad90b2`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	21952 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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