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

Static analysis result for SHA-256 84d8a4f0a80f868d…

MALICIOUS

Office (OLE) / .XLS

1.09 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 25f0668707a4ba198d5fbeb276233c98 SHA-1: a5c6ab93fa0a12503c54ec7683706a5e62cab151 SHA-256: 84d8a4f0a80f868d1eac458d418217481fd8cebe94ba0637a1eeac95bc9ec39d
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to load a remote resource. The extracted URL is the primary indicator of the malicious payload's origin. Although the VBA project contains no executable statements, the OLE structure itself is designed to trigger the exploit. The attack pattern is a remote code execution vulnerability leading to a payload 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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