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

Static analysis result for SHA-256 6fc6cce8ed2d5a11…

MALICIOUS

Office (OLE) / .XLS

98.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel
MD5: 9c7b1b5b8da335a42f03969636810d9e SHA-1: 85d4e0768453275b21c48fa96a8af7d7738ee3f8 SHA-256: 6fc6cce8ed2d5a11033978bafa4763c759668ab8cbcf47826dfdc58ee0659e15
70 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The critical heuristic firing indicates exploitation of CVE-2017-0199, which is used to download and execute a remote loader. The embedded URL is the primary indicator for the payload's origin. No VBA macros were found to be executable, but the exploit itself is sufficient for initial execution.

Heuristics 3

  • 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.
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL https://u4u.kids/YocUvD?&olive=nervous&opium=orange&equinox=accidental&wine=agreeable&songbird=uninterested&voice=receptive&croissant=fascinated&gearshift

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