Office (OLE) / .DOC malware analysis — malicious · 140a7856c988c6a0

MALICIOUS

Office (OLE) / .DOC

2.71 MB Created: 2020-04-23 18:18:00 Authoring application: Microsoft Office Word

MD5: 72f634146051f5ca16c48748e38d4540 SHA-1: d1c37ca83c085b4625a1090bb499b94f452c6937 SHA-256: 140a7856c988c6a00910e20a1178e4fcb61a2495be0e9130408d45d2d5e14900

82 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1566.001 Spearphishing Attachment

The sample is a Microsoft Word document with a large VBA macro. Heuristics indicate the presence of VBA macros and a critical ClamAV detection for 'Doc.Malware.Valyria-10035018-0'. While the VBA code is truncated, the presence of API calls like HeapCreate and HeapAlloc suggests memory manipulation, often used to download and execute payloads. The embedded URL was confirmed benign, and no other IOCs were extracted.

Heuristics 3

ClamAV: Doc.Malware.Valyria-10035018-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Malware.Valyria-10035018-0
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` `19823524f280b476707c871cd73100ac3d2d159841040b649a737cc9b52d342e`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	931844 bytes

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