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

Static analysis result for SHA-256 b29c2b4091c016b6…

MALICIOUS

Office (OLE) / .XLS

487.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-02
MD5: 932486d3ded5de048a19ab8b34d979eb SHA-1: 9e61737f32cd6a31d436d271489238349a64e33e SHA-256: b29c2b4091c016b6fb4e2080d2f64349ad98066ad94a36aa0de79fef97ccbdbc
70 Risk Score

Malware Insights

MITRE ATT&CK
T1204.002 Malicious File T1059.005 Visual Basic

The sample is an OLE file that exploits CVE-2017-0199, a known vulnerability for remote code execution. It contains a URL that likely points to a second-stage payload. The VBA macros are present but do not contain executable statements, suggesting the exploit is triggered by the OLE structure itself rather than macro 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 http://OIWEROFSDFOOWROOSDFODFOWESODFGDOFGOSDFOIOFSODOXCVVODOO00FOF00F0DF0FFSDF0SDF00SDF0DF0SDF00SDF0S0DF00DF@192.3.101.153/d3.d3.d3.doc

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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