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

Static analysis result for SHA-256 8fd1231ff0111037…

MALICIOUS

Office (OLE) / .XLS

674.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 162ce0da66ffa7fb68f59af78b0ba4e3 SHA-1: c35b7a9bb777a145aaf9ea52df0076c2300f5601 SHA-256: 8fd1231ff01110379b10b2272d9c854858467ab701d5df19e36d88ad217f8a35
68 Risk Score

Malware Insights

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

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is a known vulnerability for remote code execution. The embedded URL is highly suspicious and likely serves as a loader for a second-stage payload. Although the VBA project contains no executable statements, the OLE structure itself is indicative of a malicious document designed to exploit this vulnerability.

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.
    URL http://00025475315574/www.cdwg.comcontentcdwgenarticlessecurityprotecting-ot-and-critical-infrastructure-in-an-evolving-threat-landscape.htmlgood.php
  • 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