Office (OLE) / .XLS malware analysis — malicious · 9946f5627aca5f1a

MALICIOUS

Office (OLE) / .XLS

160.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-06-12

MD5: 87d0f1e09af16b80b0ad2d82c7ffae7a SHA-1: 514b36b0f93a504469105dca131908566e8708b5 SHA-256: 9946f5627aca5f1aba7618580b518bb502b4b7f6c8b1002685a3e4227fce0d10

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1559.001 Component Object Model Hijacking

The critical heuristic firing indicates the presence of a payload exploiting CVE-2017-11882 within an Equation Editor OLE object. This technique is commonly used to achieve arbitrary code execution. The embedded OLE object is the primary indicator of compromise.

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` `9d9ca4d3ac04880fbf4ae6c1e411acdf4ee5adabeb723c94105a344c8a308087`	ole-package	OLE Ole10Native stream: MBD0038C0CE/OlE10NaTIVE	1974 bytes

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