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

Static analysis result for SHA-256 eeda8090c9caf61a…

MALICIOUS

Office (OLE) / .XLS

680.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 3999315c81502a9db2e945c1fdc74996 SHA-1: 3c77679b884d318852a3a1936255222508ddbeae SHA-256: eeda8090c9caf61a33bcff8a10bafa5a46c9234a7fb82279f6022724c52c6281
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 Service Execution: Visual Basic

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 the VBA project itself contains no executable statements, the OLE structure is the primary vector for exploitation. The extracted URL is the highest priority IOC for further investigation.

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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