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

Static analysis result for SHA-256 770baf3fbd5bc70b…

MALICIOUS

Office (OLE) / .XLS

848.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 2da17e1c4ebf26a69581d54a54820b02 SHA-1: 812508063f7f7c4f0d5f9af05a5eb355a113f1c8 SHA-256: 770baf3fbd5bc70b9e53163834bf28524b88471bece306ddfa458be1d5a5dcb1
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an Excel file that leverages the CVE-2017-0199 vulnerability. This vulnerability allows the file to act as a remote loader, downloading and executing a secondary payload from the embedded URL. The VBA project itself does not contain executable statements, indicating the exploit is likely triggered by the OLE object structure.

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://keraskale.me/xDGwVt?&inn=vulgar&mosque=tacky&phrase=quarrelsome&guest=enchanting&angiosperm=daffy&dipstick=enthusiastic&foxglove=heavy&strip

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.