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

Static analysis result for SHA-256 afa9f9301f3f7466…

MALICIOUS

Office (OLE) / .XLS

1.17 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 6d88b5e7d887660ef5975e165c773f7e SHA-1: ca2fa6bc9b85de2fea64171555c66bec68af5328 SHA-256: afa9f9301f3f746688b3b41464105db02aa6c7909ee1e44996b2a6de7caa4a34
68 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 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 a specified URL. The extracted URL, https://link.orai.io/yVfeyc?&ridge=ceaseless&chemistry=calm&sarah=petite&birth, is highly suspicious and likely serves as the distribution point for the secondary stage. Although the VBA project contains no executable statements, the OLE vulnerability itself is sufficient for initial compromise.

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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