MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution
T1204.002 Malicious File
T1566 Phishing
T1566.001 Spearphishing Attachment
T1059 Command and Scripting Interpreter
The critical heuristic firing for CVE_2017_11882_EQUATION_OLE10NATIVE indicates the exploitation of a known vulnerability in Microsoft Equation Editor. This is commonly used as a delivery mechanism for malware. The ClamAV detection further confirms its malicious nature as a downloader. The file likely attempts to download and execute a second-stage payload.
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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ClamAV: Xls.Downloader.94c25b356b5a6cac-9978798-0 critical CLAMAV_DETECTIONClamAV detected this file as malware: Xls.Downloader.94c25b356b5a6cac-9978798-0
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
ole10native_00.bin0b1956c6a0a79381a4187b7d266386f80f4d2f5e688cb6985e04e6972387b4d1 |
ole-package | OLE Ole10Native stream: MBD008F2E0D/Ole10Native | 1657 bytes |
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