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

Static analysis result for SHA-256 f09b125852fc2e24…

MALICIOUS

Office (OLE) / .XLS

1.12 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: cc58199fce8958e7a3307907e755c45a SHA-1: 226a38896fd4a476ac56ea295e658ac9e4e7a5d4 SHA-256: f09b125852fc2e24a6d8fd495ccd7b88a762ca62593c16e62da5fefce6c8dc42
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 via an OLE2Link object, which is designed to load remote content. The extracted URL is the likely source of the secondary payload. No VBA macros were found to be executable, but the presence of the exploit and the URL strongly suggest a malicious downloader.

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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