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

Static analysis result for SHA-256 691c9597348e959a…

MALICIOUS

Office (OLE) / .XLSX

706.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: ec212e21d56be56a532ef7e426b98221 SHA-1: 9e8e5552101a08b335a6ce1dcf73ac5116305f6b SHA-256: 691c9597348e959a495cf56d4f9c050f8ea5b8b13b06e85bf27d620b0299b9dd
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1059.005 Visual Basic

The sample is an Excel file that exploits CVE-2017-0199, a known vulnerability for remote code execution. It attempts to download a secondary payload from the URL https://ccurl.xyz/rPzH. Although the VBA macros themselves do not contain executable statements, the file's structure and the critical heuristic firing strongly indicate malicious intent. The embedded URL is the primary indicator for the next stage of the attack.

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 https://ccurl.xyz/rPzH

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

Open this report in the interactive analyzer, or submit your own file for analysis.