Office (OOXML) malware analysis — malicious · 61ada36c02b40ee9

MALICIOUS

Office (OOXML)

66.1 KB Created: 2006-09-16 00:00:00 UTC Authoring application: Microsoft Excel 15.0300 First seen: 2020-02-04

MD5: 267301a0811cb1ec264dec74ce952595 SHA-1: 7b7591898e52005efaadbd3e6b9e95bcd5e89e6c SHA-256: 61ada36c02b40ee92dbfdf13f7ef8830dddc9cf61aacebfb60a41383746815c6

200 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is an Office document containing an embedded OLE object, specifically identified as a Microsoft Equation Editor exploit. ClamAV signatures confirm this, indicating the file is malicious and likely leverages CVE-2017-11882 for arbitrary code execution. The embedded OLE object is the primary indicator of compromise.

Heuristics 4

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Embedded OLE object xl/embeddings/oleObject1.bin contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
Embedded OLE object medium OOXML_OLE_OBJECT

Document contains an embedded OLE object
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: xl/embeddings/oleObject1.bin	4608 bytes
SHA-256: `f1bd28a314e831feb48c65f12734bffba8916b0b1033b6754a87d1ea20e0a013`
Detection ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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