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

Static analysis result for SHA-256 68dc59ec2a8643b6…

MALICIOUS

Office (OLE) / .XLS

1.07 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 41a04e14da07dc2c780d1d63d5f6f055 SHA-1: e1968b71cb868225cbe2f43d49bae14c55ea3fcb SHA-256: 68dc59ec2a8643b6aee641fb7bb03f3fc8b86e169b57aa026f45d9e048a0e4ad
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The file is an Excel spreadsheet that exploits CVE-2017-0199 via an OLE2Link object to download and execute a remote payload from the URL http://jx.ax/2Mf. Although VBA macros were present, they contained no executable statements, suggesting the exploit is directly embedded within the OLE structure. The primary function appears to be acting as a downloader for a second-stage malicious payload.

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://jx.ax/2Mf

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