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

Static analysis result for SHA-256 a51342335104393e…

MALICIOUS

Office (OLE) / .XLS

279.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a1792400831db6362b300725056bed1d SHA-1: 62b724bd7357ad932f97a964a64dc332a2507d93 SHA-256: a51342335104393e9bcca1cde0ab3b2019f4fe6fdb0ab73a24fa39b7a52d59f0
68 Risk Score

Malware Insights

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

The sample is an OLE file that exploits CVE-2017-0199 via a URL moniker to load a remote resource. The embedded URL 'http://urlty.co/byPCO' is highly suspicious and likely serves as a loader for a second-stage payload. Although the VBA project contains no executable statements, the critical heuristic firing indicates the exploit mechanism is present.

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://urlty.co/byPCOC�������F|g��

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