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

Static analysis result for SHA-256 8be101509461d895…

MALICIOUS

Office (OLE) / .XLS

1.06 MB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-02-23
MD5: 919c0f851b252a6c834b5ba9470e6c0d SHA-1: df40f89bbc105c96aa93ce2465a3ed06cb7e065a SHA-256: 8be101509461d8954f93b6898c1fe407f6a95c78de3b64392e5b785ce55df5b0
110 Risk Score

Malware Insights

MITRE ATT&CK
T1204 Malicious Link T1204.001 Malicious Link: Malicious Link T1566 Phishing T1566.001 Phishing: Spearphishing Attachment T1566.002 Phishing: Spearphishing Link

The file contains an embedded OLE object specifically identified as a payload for CVE-2017-11882, a known vulnerability in Microsoft Equation Editor. This indicates the file is designed to exploit this vulnerability upon opening, likely to download and execute a secondary malicious payload. No VBA macros were found to contain executable statements, but the critical heuristic firing confirms the exploit.

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://schemas.openxmlformats.org/drawingml/2006/main

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
a04ee4dbe9da5ef54d5fac5a291cedbba092a84a3eb2de01c59d86195d64a244		 ole-package OLE Ole10Native stream: MBD001AE137/oLE10naTive 1794 bytes

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