Office (OLE) / .XLSX malware analysis — malicious · 960373e9410142f9

MALICIOUS

Office (OLE) / .XLSX

135.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2022-10-25

MD5: b90c4a01a68d22b8a0c70e086bcd4481 SHA-1: e6ca1df29fcd26f9653e94490aecab59279fc3c4 SHA-256: 960373e9410142f91bfc386b8736aaecf3757616164ebc8212eb45c4b9d92096

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1559.001 Component Object Model

The critical heuristic firing indicates the presence of a payload exploiting CVE-2017-11882 within an Equation Editor OLE object. This exploit is commonly used to achieve arbitrary code execution. The embedded OLE object, identified as 'ole10native_00.bin', likely contains the malicious executable or script.

Heuristics 2

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.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ole10native_00.bin` `96b55d9c61fef16bf70fa8047be08ab23ded9d091036f3f037542dc745c9ae41`	ole-package	OLE Ole10Native stream: MBD01A08BF5/oLE10nAtiVe	1587 bytes

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