Office (OLE) / .XLS malware analysis — malicious · 882dfe3a3423893b

MALICIOUS

Office (OLE) / .XLS

80.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2023-01-19

MD5: b36636bb90b31e4a94521367d407e1ae SHA-1: 7f5508b87c715b1a9a7a77c124f421fa3bf6c732 SHA-256: 882dfe3a3423893b2e6a0f20108835952dd9c97061ae9cc2c00decd048257f6c

100 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The critical heuristic firing indicates the presence of a payload associated with CVE-2017-11882 within an Equation Editor OLE object. This exploit is commonly used to achieve arbitrary code execution on vulnerable systems. The embedded OLE object likely contains shellcode designed to download and execute a second-stage payload.

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` `50ead6e4b0bba053675b211c6037faa6476e8f8e6e157d3a9426fe83452d3c3c`	ole-package	OLE Ole10Native stream: MBD02695F16/OLE10NATIve	1418 bytes

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