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

Static analysis result for SHA-256 3684aa61186598be…

MALICIOUS

Office (OLE) / .XLS

311.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 54dab50acf30e5f0747b53729ff053d9 SHA-1: a7b3048a007afeaf086609ef021b74850002ef15 SHA-256: 3684aa61186598be530be99dbb9d83fb427621bdafd2d409dce7ac85f4a6c5e8
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 Service Execution: Visual Basic T1059.001 Command and Scripting Interpreter: PowerShell

The critical heuristic firing indicates the exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to load a remote resource from the URL 'https://slug.vercel.app/si9vfp'. Although no VBA macros were found to be executable, the presence of the OLE vulnerability strongly suggests a downloader or initial access mechanism. The file is an Excel spreadsheet, a common format for delivering such exploits.

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