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

Static analysis result for SHA-256 d5914791aafdc3ab…

MALICIOUS

Office (OLE) / .XLS

211.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-17
MD5: 2451e8d758673a8d0cbdd6b735dcdf4f SHA-1: 991443f0f9967a2c6ee3512f440b027f71fd0a15 SHA-256: d5914791aafdc3abc7b1fceb4be01c84197aad56996eed0e21b453c313178bd1
70 Risk Score

Malware Insights

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

The sample is an Excel file that exploits CVE-2017-0199 via an OLE2Link object to download a remote payload from the provided URL. The embedded URL is obfuscated but resolves to an IP address, indicating a likely download and execution chain. No VBA macros were found to be executable, but the exploit itself is sufficient for initial compromise.

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://EEEEEEE00EOE0EOE0EO0EOE0EOEOOE0EOEO0EOEO0EOEOOEE0OEOOEOE0EOEOE0OEOEOE0OEOEOOOEEEEEERIRIRIRIRIRIRIRIRRR0R0RIRIRIR0RI0RIR@192.3.109.146/77.............................777................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