Office (OLE) / .DOC malware analysis — malicious · ea56917ebede0b18

MALICIOUS

Office (OLE) / .DOC

650.5 KB Created: 2020-01-10 10:32:00 Authoring application: Microsoft Office Word

MD5: 10b00958db8bddf5a4fdc82a4f13a562 SHA-1: b3d40fdd225ee6570d4b7c6b012fa0afa586c57f SHA-256: ea56917ebede0b18681c879ab3a68a42dcc16d95fe44660fcc8b67a4bfe3151d

100 Risk Score

Malware Insights

MITRE ATT&CK

T1059.005 Visual Basic T1059.001 PowerShell T1218 Signed Binary Proxy Execution

The sample is a Microsoft Office document containing VBA macros. High-severity heuristics indicate the presence of CreateObject and CallByName calls, common in macro-based malware for executing arbitrary code. The extracted document body contains heavily obfuscated JavaScript-like code, which is likely responsible for downloading and executing a second-stage payload. The exact nature of the payload cannot be determined due to the obfuscation, but the techniques used suggest a downloader or dropper.

Heuristics 4

CreateObject call high OLE_VBA_CREATEOBJ

CreateObject call
CallByName call high OLE_VBA_CALLBYNAME

CallByName call
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` `d81d7be6a387658f9591a94758b6a958798853736d1c6fc0a672f3dae8a81221`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	3889 bytes

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