MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
The sample contains an embedded Equation Editor OLE object that is known to be used to exploit CVE-2017-11882. This vulnerability allows for arbitrary code execution when the document is opened. The presence of the 'OLE10nAtivE' payload strongly indicates exploitation of this specific vulnerability. No document body text or scripts were extracted, but the critical heuristic firing is sufficient for attribution.
Heuristics 3
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Equation Editor Ole10Native payload — CVE-2017-11882 critical CVE likely CVE_2017_11882_EQUATION_OLE10NATIVEAn 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.
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Equation Editor OLE object high OLE_EQUATION_EDITORContains Equation Editor object — related to CVE-2017-11882 / CVE-2018-0802 exploitation, but CLSID presence alone is not the malformed MTEF exploit primitive.
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x86 GetPC stub (CALL $+5; POP EDX) high SC_GETPC_CALLx86 GetPC stub (CALL $+5; POP EDX)
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
ole10native_00.bin922c538d5e65e16404ae0d342c7d2cd0c5c70f6d5e735a42609ff845fd45cdfd |
ole-package | OLE Ole10Native stream: OLE10nAtivE | 971810 bytes |
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