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

Static analysis result for SHA-256 46463f97518091c9…

MALICIOUS

Office (OLE) / .XLS

640.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 1edb633bd6cace0251cdce53c9ebb66a SHA-1: 086134a30e3fcf793078432a88bd07a3e2c4782d SHA-256: 46463f97518091c911a730c5d2d04d1dcfc8d5ed972760983af6a33375567aba
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1059.001 PowerShell T1059.003 Windows Command Shell

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which is designed to download and execute a remote payload from the provided URL. Although VBA macros were extracted, they contained no executable statements, suggesting the primary malicious functionality relies on the OLE vulnerability. The sample's purpose is to act as a downloader for further malicious content.

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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