Office (OLE) / .DOCX malware analysis — malicious · 4f2f8a8fef03110f

MALICIOUS

Office (OLE) / .DOCX

233.8 KB Created: 2020-10-28 21:52:00 Authoring application: Microsoft Office Word

MD5: 02ad90087b3c47767e76543da0b5bca3 SHA-1: 10af96a256af538def1b44b756ff6abe4ae480f2 SHA-256: 4f2f8a8fef03110fe0af0be6dda05249f96b6a915b1c7d1a9fcaa7c9f79ce288

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 a VBA macro that automatically executes upon opening, as indicated by the 'Document_Open' and 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristics. The presence of 'CreateObject' calls suggests the macro is capable of launching external processes or objects. ClamAV detection as 'Doc.Downloader.Generic' further supports the conclusion that this macro is intended to download and execute a second-stage payload. No specific family could be identified, but the behavior is consistent with a downloader.

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` `5aa3aad97a35a46de04017100e8aadce01daec323c971d220dcadfd4335841c1`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18882 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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