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

Static analysis result for SHA-256 f52e2e5f9d2c8d7a…

MALICIOUS

Office (OLE) / .XLS

1.24 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: fd52776a26a9c7ca25c6d77435f05360 SHA-1: cf7e8b3b67c06c9e2d4b9c7f9823007020db1678 SHA-256: f52e2e5f9d2c8d7aa9dff68ae66fae931e4fdf77d76aec165b261b6fbe282392
68 Risk Score

Malware Insights

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

The file is an OLE document that exploits CVE-2017-0199 via a URL moniker to download and execute a remote loader. The embedded VBA macro, while not containing executable statements directly, is associated with the exploit. The primary IOC is the URL used for the payload download.

Heuristics 2

  • 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.

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