Office (OLE) / .DOCX malware analysis — malicious · 967415ea771ff1e6

MALICIOUS

Office (OLE) / .DOCX

155.0 KB Created: 2020-09-14 19:47:00 Authoring application: Microsoft Office Word

MD5: 48742190b49b4cd2097f792286c66ccf SHA-1: ac851ecf26542af981d78102980134c58d39a007 SHA-256: 967415ea771ff1e6fbce4550f16b452266f68cbffca120254022093ec6813741

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a malicious VBA macro, specifically triggered by the Document_Open event. This macro utilizes CreateObject to execute arbitrary code, as indicated by the 'OLE_VBA_PCODE_AUTOEXEC_EXEC' heuristic. The presence of 'macros.bas' further confirms the macro-based execution. The primary attack pattern involves leveraging the macro to download and execute a second-stage payload.

Heuristics 7

ClamAV: Doc.Malware.Generic-9760307-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Generic-9760307-0
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` `0b6180fea2f2eb783f5bda16a3b3f9aadc8aaa21f7b3f16e95bf573cb2bafb66`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18514 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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