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

Static analysis result for SHA-256 519cda9511738dfa…

MALICIOUS

Office (OLE) / .XLS

226.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 6a899fecf09eb7899fd6a521aba5eb5e SHA-1: 2f514a32ca1990347a42c4f3934afcab5a341530 SHA-256: 519cda9511738dfa6ad57a5716bd217d9c44af7023907711ddc76c4511f24d60
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, which is a known vulnerability used to download and execute remote code. The embedded URL is highly suspicious and likely serves as the source for 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

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