Office (OLE) / .XLSX malware analysis — malicious · 467716b30f4ecc76

MALICIOUS

Office (OLE) / .XLSX

807.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2026-02-20

MD5: 127fb185fd652d378f93f27481950e49 SHA-1: 2369718fbc9afa01f0939b74a1b3f54e60dcf951 SHA-256: 467716b30f4ecc76a35adcb98fd35b26589ce67d5e2495fc7b31317c3324fad1

108 Risk Score

Malware Insights

MITRE ATT&CK

T1204.002 Malicious File: User Execution T1059.005 PowerShell

The sample contains an embedded Equation Editor OLE object that exploits CVE-2017-11882. This vulnerability allows for arbitrary code execution when the object is loaded. Although no VBA macros were found to contain executable statements, the presence of the vulnerable OLE object indicates a malicious intent to exploit this known vulnerability. The primary attack vector is likely user interaction with the malicious OLE object within the Office document.

Heuristics 3

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.

Extracted artifacts 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`macros.bas` `7f506327609c082af1cd37dde23bc2c71a000f7d1ef530b6abb66775040a7673`	vba-macro	oletools.olevba.extract_macros (decoded VBA source)	1206 bytes
`ole10native_00.bin` `02270e5b9b3871aaacd9b4744c19eb5256968569bd753b4f93929796347af3d2`	ole-package	OLE Ole10Native stream: MBD005FE143/oLe10nAtiVe	1802 bytes

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