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

Static analysis result for SHA-256 1bbf0cf12da84316…

MALICIOUS

Office (OLE) / .XLS

1.52 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-03-16
MD5: d6e8a2e96771f3bbeb8d251fc7fd4c25 SHA-1: 1e934b13fbc564c4553ecc2a45b9750cc8b14a86 SHA-256: 1bbf0cf12da84316094c5335876420a8ea7e9dd3eb7dbfdba92fac23f0f01803
110 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an Excel file containing an embedded Equation Editor OLE object. Static analysis identified a critical heuristic firing for CVE-2017_11882_EQUATION_OLE10NATIVE, indicating exploitation of this known vulnerability. The VBA project contains no executable statements, suggesting the exploit is directly within the OLE object.

Heuristics 4

  • Equation Editor Ole10Native payload — CVE-2017-11882 critical CVE likely CVE_2017_11882_EQUATION_OLE10NATIVE
    An embedded Microsoft Equation 3.0 object (CLSID 0002CE02-0000-0000-C000-000000000046) carries an Ole10Native packager stream instead of the normal Equation Native/MTEF data. This is the weaponized Equation Editor RCE delivery shape used by CVE-2017-11882 / CVE-2018-0802 maldocs. The payload (font-record overflow + shellcode) is frequently encrypted and the stream name case-scrambled to evade scanners, but an Equation object holding an Ole10Native stream has no benign use.
  • Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR
    Contains Equation Editor object — related to CVE-2017-11882 / CVE-2018-0802 exploitation, but CLSID presence alone is not the malformed MTEF exploit primitive.
  • 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://www.w3.org/1999/02/22-rdf-syntax-ns#
    • http://ns.adobe.com/xap/1.0/
    • http://purl.org/dc/elements/1.1/
    • http://ns.adobe.com/xap/1.0/mm/
    • http://ns.adobe.com/pdf/1.3/

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
ole10native_00.bin
10d35aeae21fb70bb316429f9b984b67dab8baadf27c1e18be43192521ee49b6		 ole-package OLE Ole10Native stream: MBD0127172D/OlE10NATIve 1419 bytes

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