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

Static analysis result for SHA-256 45290b4004ea20d6…

MALICIOUS

Office (OLE) / .XLS

126.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 7536a2d6fd49b79c1d30dd642ad3f30c SHA-1: 09ef75f69c9c5f1faa7137734cff99e75d494c83 SHA-256: 45290b4004ea20d63e797cbf289370f2a14fb9df5a39647c44aa2bcf623dd677
68 Risk Score

Malware Insights

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

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to load remote content. The embedded URL, https://link.emcdn.ru/2ZocRn, is highly suspicious and likely serves as the initial download point for a secondary malicious payload. No VBA macros were found to be executable, but the OLE structure itself is the vector for exploitation.

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