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

Static analysis result for SHA-256 70b137e09f516f4b…

MALICIOUS

Office (OLE) / .XLS

322.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: a6f4af306b64b524f301a059bf53d259 SHA-1: 77940d9fb812f81d7b4184313a07d50d8fab2275 SHA-256: 70b137e09f516f4bb0d4e7100bc6e171323da0f7dea7e3581cf182bebd332037
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote loader from the URL http://hop.fyi/7Md1u. Although VBA macros were present, they contained no executable statements, suggesting the exploit relies on the OLE object vulnerability rather than macro execution. The embedded URL is the primary indicator of compromise.

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://hop.fyi/7Md1u

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