Office (OLE) / .DOCX malware analysis — malicious · 914409456ddec456

MALICIOUS

Office (OLE) / .DOCX

258.3 KB Created: 2020-10-29 09:30:00 Authoring application: Microsoft Office Word

MD5: 1852c8f0bbca5b707406994714c4b118 SHA-1: 0bda9af5531b0b8c8a8015ec6c3c7eccde11f998 SHA-256: 914409456ddec456e3d23eb4a36d9b3092703f59958ecdb8a3549e0c96f653a6

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document containing VBA macros, specifically a Document_Open macro that uses CreateObject. This indicates an attempt to automatically execute code when the document is opened. The ClamAV detection as 'Doc.Downloader.Generic' strongly suggests the macro's purpose is to download and execute a second-stage payload. No specific family could be identified, but the technique is common for initial access.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9785156-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9785156-0
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` `2c8aded1cc33908777d3554a19067d8f93ed6d8269cc13dcdcff33eca45ebd5f`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18919 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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