Office (OLE) / .DOCX malware analysis — malicious · 9b15f15ca0fc3748

MALICIOUS

Office (OLE) / .DOCX

195.5 KB Created: 2020-09-18 21:15:00 Authoring application: Microsoft Office Word

MD5: a7014529c998e40ee243131c0e937653 SHA-1: 4eab075b689049542a04510ca10a5c8513c7c709 SHA-256: 9b15f15ca0fc3748ef3b9f9a91bae081e2b5c076d1b39e7e16cfbe3a08cc5070

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The file is a Microsoft Office document with a high-confidence detection for VBA macros, specifically triggering a Document_Open auto-execution macro. This macro uses CreateObject, indicating it's designed to perform actions beyond simple document display. The ClamAV detection 'Doc.Downloader.Generic-9763611-0' strongly suggests the macro's purpose is to download and execute a secondary payload. No specific URLs or executable content were directly extracted, but the heuristic firings point to a downloader pattern.

Heuristics 7

ClamAV: Doc.Downloader.Generic-9763611-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Generic-9763611-0
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` `27aa07f405fa9b3280133cc26ba8fa4c11df7235c7ef1a37f33a0286291c2144`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19156 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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