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

Static analysis result for SHA-256 fca02431c1cc1002…

MALICIOUS

Office (OLE) / .XLS

1.69 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: aeb57fe358e48eb14ea64ca2e14649ab SHA-1: 98339c85632a3ae4da00a6b497c5a9537c2a4207 SHA-256: fca02431c1cc1002da9f9d077b07e57bfea7d010b90aaf28071fe1ffbe80a6e3
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File: User Execution T1059.005 PowerShell T1105 Ingress Tool Transfer

The critical heuristic firing indicates exploitation of CVE-2017-0199 via an OLE2Link object, which attempts to load a remote resource. The embedded URL, 'https://somegreatperformancefromtheserverwithgoodnewbecomewithgreathappinessof.docx@acessaurl.com/ssWW9Zj', is the primary indicator of the download source for a secondary payload. Although VBA macros were present, they contained no executable statements, suggesting the exploit relies solely on the OLE vulnerability.

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.
    URL https://somegreatperformancefromtheserverwithgoodnewbecomewithgreathappinessof.docx@acessaurl.com/ssWW9Zj
  • 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