Malicious Office (OLE) / .XLS — malware analysis report

Static analysis result for SHA-256 4afe5f800d3279dc…

MALICIOUS

Office (OLE) / .XLS

529.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 4ad6b70f35bc161616f91b95c4d4da1e SHA-1: 086acea9496403dfb0b62355780a03dc76f9fd9f SHA-256: 4afe5f800d3279dce19baf9be2f6cdf87c9ac3b9c56bbd1c1e51a3ddb9e45918
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1204 User Execution

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to download a remote payload from the URL 'http://gf.to/UsZYSesje'. Although the VBA project itself contains no executable statements, the presence of the OLE vulnerability strongly suggests a malicious intent to load external content. This points to a downloader or dropper attack pattern.

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.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes

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