Office (OLE) / .XLSX malware analysis — malicious · 180d4590db1326a4

MALICIOUS

Office (OLE) / .XLSX

201.0 KB Created: 2006-09-16 00:00:00 Authoring application: Microsoft Excel First seen: 2022-10-31

MD5: 295d2090edd09657a2f4d11054c7775d SHA-1: 8343619c38d7fde2ffa871eb910e4c300ab29b63 SHA-256: 180d4590db1326a44047937837a9e67821cefd1ca0ccf4f3b26e023284aecd0c

100 Risk Score

Malware Insights

MITRE ATT&CK

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

The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability in Microsoft Equation Editor. This technique is commonly used to execute arbitrary code, likely to download and run a second-stage payload. The embedded OLE object is the primary indicator of this exploit.

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` `18027bebdcd15e99e937cd2c157e49058ff1cda5c9552c98e604895c0885c00b`	ole-package	OLE Ole10Native stream: MBD038C448E/Ole10nAtIVE	1524 bytes

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