Office (OLE) / .DOCX malware analysis — malicious · 85177e9fdb0245b4

MALICIOUS

Office (OLE) / .DOCX

181.5 KB Created: 2020-10-22 12:14:00 Authoring application: Microsoft Office Word

MD5: ba4c87bc9ee236d245d86e65bd0ddbff SHA-1: d340ca0517f25c9b874146be0dbf170be111ec71 SHA-256: 85177e9fdb0245b4bf82bacf584df357798f47c9cb8da3c5d7d2dc29b26137db

240 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1204.002 Malicious File T1105 Ingress Tool Transfer

The sample contains VBA macros, specifically a Document_Open macro that executes code via CreateObject. This is indicative of a downloader. The ClamAV detection 'Doc.Downloader.Logan-9781905-0' further supports this. The embedded artifact 'macros.bas' is the source of the malicious VBA code. The document body appears to be heavily obfuscated or corrupted, preventing analysis of its specific lure.

Heuristics 7

ClamAV: Doc.Downloader.Logan-9781905-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Downloader.Logan-9781905-0
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` `312ef617e63493e61b3bcd46b3231fa9b7aec5a75b005f32edf123ee68ffccb7`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18806 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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