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

Static analysis result for SHA-256 0ef3405f8baafed8…

MALICIOUS

Office (OLE) / .XLS

706.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 23243ee68fe6b0c9039a96986e75ccaa SHA-1: 91d01721249ba5fb37f18c3d05a1881dc40efc37 SHA-256: 0ef3405f8baafed87fc33e35d442cae4e0fe459ec0ca1a87922390724a838cb4
70 Risk Score

Malware Insights

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

The file is an Excel spreadsheet that exploits CVE-2017-0199 via an OLE2Link object to download a second-stage payload from the URL https://ccurl.xyz/Tenh. Although the VBA project itself contains no executable statements, the critical heuristic firing indicates the exploit is present and active. The embedded URL is the primary indicator of compromise.

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/Tenh

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