Office (OLE) / .DOC malware analysis — malicious · 5a586d16a655c4b1

MALICIOUS

Office (OLE) / .DOC

239.4 KB

MD5: a3810d60f0785a4279a5c69ce224b5c4 SHA-1: 1813e34fb2e4bf460f262076de90b1eb1237348e SHA-256: 5a586d16a655c4b142b0d419a75c12e385b6f96a2eb46e966663b8b820556f3a

202 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a malicious OLE document containing VBA macros, specifically a Document_Open macro that uses CreateObject. The VBA script is heavily obfuscated but appears to perform text replacement and likely downloads a secondary payload. The ClamAV detection 'Doc.Downloader.Generic-9785156-0' further supports this downloader functionality.

Heuristics 6

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.
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` `46bbf753c021dd824889110da33bb354da3f9a617de0713dd50b52c1bcf8132b`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	18397 bytes

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