Office (OLE) / .XLSX malware analysis — malicious · 85d573afcffdd74d

MALICIOUS

Office (OLE) / .XLSX

149.5 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2022-10-27

MD5: c76bbb423374d5814d6f879c2381826b SHA-1: 41469ded9c20aa9c52095f218259b05f8f4e87af SHA-256: 85d573afcffdd74d26965ca7b487e5aefee1f178e6e69c48cd6d3e6fe84843a7

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability. The presence of an Equation Editor OLE object further supports this finding. The embedded OLE object likely contains a second-stage payload, though its specific nature cannot be determined from the provided evidence.

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` `e6e616f47045e5dc87e74d5fec91fbee16d2e880f8fb96bf21b11cb0f173b283`	ole-package	OLE Ole10Native stream: MBD002920D3/oLE10nATiVe	1309 bytes

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