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

Static analysis result for SHA-256 675d8d67798e376f…

MALICIOUS

Office (OLE) / .XLS

1.20 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 8a6f49428d211b10f1330ed0bb949498 SHA-1: e3028d13ead3723e1aa0a2cd2fea5b20dbfaa200 SHA-256: 675d8d67798e376fba7dfd29a8055df1852874f896830f7e06388a4607def7c7
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote loader from the URL http://ft.ax/k7B. Although VBA macros were present, they contained no executable statements, suggesting the exploit is directly embedded within the OLE structure. The file is an Excel spreadsheet, and the exploit targets a vulnerability in OLE to achieve remote code execution.

Heuristics 3

  • 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.
  • 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://ft.ax/k7B

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