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

Static analysis result for SHA-256 1934bc7e9faa5f41…

MALICIOUS

Office (OLE) / .XLS

271.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-05-19
MD5: b2c756499037d7ba2a95c386df693da5 SHA-1: 92782bd34f584dec90e7d0f664f03969bb7caca0 SHA-256: 1934bc7e9faa5f4152b6b5248bfcbb27d3a3b804dbd22284f7d9860c4919362e
110 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 attempts to download a secondary document from the URL http://195.201.147.116/h/i/lllll%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23lll.doc. Although no executable VBA code was found, the presence of an embedded PDF with suspicious static findings suggests a multi-stage attack. The primary goal appears to be the download and execution of a further payload.

Heuristics 4

  • 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.
  • Secondary embedded PDF body has suspicious static findings high POLYGLOT_CHILD_PDF_STATIC_TRIAGE
    A valid PDF body was found at a nonzero offset inside another container and its carved contents matched PDF exploit or lure heuristics. This catches polyglots where the top-level magic routes to ZIP/OLE while a PDF reader or downstream parser opens the hidden PDF payload.
  • 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://195.201.147.116/h/i/lllll%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23%23lll.doc
    • http://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/pdf/1.3/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/
    • http://ns.adobe.com/xap/1.0/mm/

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
macros.bas
7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673		 vba-macro oletools.olevba.extract_macros (decoded VBA source) 1206 bytes
polyglot_child_pdf_off00011400.pdf
030f6a9c06081aa3d0042b6442d0343e3bb0ad22046e524ef9796f2a20896f85		 polyglot-child-pdf Secondary PDF body inside ole container at offset 0x11400 206848 bytes

Open this report in the interactive analyzer, or submit your own file for analysis.