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

Static analysis result for SHA-256 4455c01cd33c703e…

MALICIOUS

Office (OLE) / .XLS

706.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 8e11d5aa70716def9a1a5b172fd97fd0 SHA-1: 1bde33d0c82ffb084be603c79ce8da90dbdc3f78 SHA-256: 4455c01cd33c703e07f94289d8d4be5286d1ae05b2a6ec3855e6e95ed5ad49f9
68 Risk Score

Malware Insights

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

The file is an OLE2Link object that exploits CVE-2017-0199, a known vulnerability for remote code execution. The heuristic explicitly identifies the exploit and the URL used to fetch the secondary payload. No VBA macros were found to be executable, but the exploit itself is sufficient for a malicious 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