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

Static analysis result for SHA-256 a473dfc4162706e4…

MALICIOUS

Office (OLE) / .XLS

125.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-10-18
MD5: fd8fb53ab7fa694061b522655c0ef606 SHA-1: e0e4a713ea490b03bcefbcf9c39e5656d33d12c8 SHA-256: a473dfc4162706e4f299353381a26e1f372bcff5223ca8568de6acab98644933
70 Risk Score

Malware Insights

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

The critical heuristic firing for CVE-2017-0199 indicates the sample is designed to exploit this vulnerability. The embedded URL, http://192.3.108.47/html/HTMLcache.doc, is likely the source of the remote loader. Although the VBA project contains no executable statements, the exploit itself is sufficient to achieve remote code 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://192.3.108.47/html/HTMLcache.doc

Extracted artifacts 3

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
font_00_sfnt_off00002f7d.bin
68d167e68895a344f3603a4efd0d8438eb8fdebe759cee48f2b4adf75c76c961		 pdf-font-stream PDF embedded font (sfnt) at offset 0x2F7D 12100 bytes
font_01_sfnt_off00004d95.bin
50551000b9f90b3f445ee94749557d9ddf96697a74984b3ccf3d2bae66910750		 pdf-font-stream PDF embedded font (sfnt) at offset 0x4D95 15820 bytes

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