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

Static analysis result for SHA-256 f89f2956b22f989c…

MALICIOUS

Office (OLE) / .XLS

98.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 4e274c9cdc019b92803a45733d594266 SHA-1: 4a2be7a60b378db330cf99e5ed4f46ee8c1cdb9e SHA-256: f89f2956b22f989cdf1347172c33c45b8a7c3cfcae40bbdac74deeb19228a87d
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE file that exploits CVE-2017-0199 via a URL moniker. This technique is used to download and execute a remote payload from the provided URL. Although the VBA project itself contains no executable statements, the OLE structure and the critical heuristic firing strongly indicate a malicious intent to leverage the CVE for remote code execution.

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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