Office (OLE) / .DOCX malware analysis — malicious · 322437c9e6792663

MALICIOUS

Office (OLE) / .DOCX

152.5 KB Created: 2020-09-24 05:47:00 Authoring application: Microsoft Office Word

MD5: aa8f14e735553a09377d3419a51d9f68 SHA-1: 5138f677162407895222d496a2656a075906d753 SHA-256: 322437c9e679266325e5e5e4e5192b3480e02f680d56fbede6b807db9def583a

240 Risk Score

Malware Insights

MITRE ATT&CK

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

The sample contains a Document_Open VBA macro that is automatically executed upon opening the document. High-confidence heuristics indicate the use of CreateObject and p-code execution, suggesting the macro is designed to download and execute a second-stage payload. The obfuscated nature of the VBA code and the presence of the 'macros.bas' artifact further support this assessment. The document body content appears to be heavily obfuscated or corrupted, preventing a clear understanding of its lure.

Heuristics 7

ClamAV: Doc.Trojan.Agent-9765752-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Trojan.Agent-9765752-0
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` `b0798fb7450882311ba60b57e039433588cb794c6cc8a10f75d1de73c5c7973a`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	19490 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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