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

Static analysis result for SHA-256 3df16653affd5ddd…

MALICIOUS

Office (OLE) / .XLS

307.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2024-05-28
MD5: c3dc8fb22795f4efb58e63c8f2110561 SHA-1: 97e7c1949993ce9246baf1bb5c9d4f34020435f4 SHA-256: 3df16653affd5ddd6a27c4b9a4e92aa3e4b87fc61b4332b7c9675ba1cfc8a70f
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the URL http://z2.ink/zBOD. Although the VBA project itself contains no executable statements, the exploit mechanism is embedded within the OLE structure, pointing to a remote code execution attempt.

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://z2.ink/zBOD

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