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

Static analysis result for SHA-256 6384a2dcc3583f81…

MALICIOUS

Office (OLE) / .XLS

766.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2026-03-12
MD5: caa5c7bcea23d62ee0450adbbaf8a731 SHA-1: b4ac9030bd48e227af0696095863ac46e2972c7d SHA-256: 6384a2dcc3583f81a71de8534d6af28076a28f22f930cfe4b95251c2b1e23d9b
70 Risk Score

Malware Insights

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

The sample is an Excel file that leverages the CVE-2017-0199 vulnerability to download and execute a secondary payload from a remote URL. The VBA macro itself does not contain executable statements, but the OLE structure indicates the exploit is present. 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 http://000000000015353773003/0000000000000000001.php

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