Office (OLE) / .XLS malware analysis — malicious · a25ec5687e4e30ff

MALICIOUS

Office (OLE) / .XLS

1.12 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel

MD5: c67ac9108286124d7cb943345b9f5aa4 SHA-1: a304bd31e0e64b66f19f19f8beb0aa72494ed82c SHA-256: a25ec5687e4e30ff608910552864e335f3bbf3d7c778e4daa2f95e1d4ea07078

68 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File Execution: Malicious File T1059.005 Command and Scripting Interpreter: Visual Basic

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the specified URL. Although the VBA project contains no executable statements, the presence of the OLE object and the associated URL strongly suggests a malicious intent to load external content. The file is an Excel spreadsheet, and the exploit targets a known vulnerability in Microsoft Office applications.

Heuristics 2

OLE2Link / URL Moniker → remote loader — CVE-2017-0199 critical CVE likely CVE_2017_0199

Document contains an embedded OLE link object whose URL Moniker points to a remote URL. When the host file is opened, Office follows the link, downloads the URL, and processes the response based on its Content-Type (HTA -> mshta.exe, RTF → Word, etc.) — the documented CVE-2017-0199 primitive. The URL extension is not a reliable filter; servers can return different payloads to Office's user agent.
VBA project contains no executable statements low OLE_VBA_MACROS

Document contains a VBA project, but extracted modules only contain attributes/options/comments and no executable statements.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1206 bytes

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