Office (OOXML) malware analysis — malicious · bbd2c348c18756b7

MALICIOUS

Office (OOXML)

168.0 KB Created: 2017-11-08 04:35:46 UTC Authoring application: Microsoft Office PowerPoint 16.0000 First seen: 2018-07-18

MD5: 9a6afa76397902873049651387f4fd38 SHA-1: 0e3f00c1252f4a11fe4e109b1a803b5142442c4d SHA-256: bbd2c348c18756b7588285dbb16afafd0da627bd38b18af277fe3be02900b96b

120 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PowerPoint document containing an embedded OLE object that exploits CVE-2018-0798 in the Equation Editor. This vulnerability allows for the execution of arbitrary code, likely a second-stage payload. The presence of shellcode candidates in extracted artifacts further supports this conclusion.

Heuristics 4

Equation Editor OLE object high CVE related OLE_EQUATION_EDITOR

Embedded OLE object ppt/embeddings/oleObject1.bin contains the Equation Editor CLSID, the legacy component exploited by CVE-2017-11882, CVE-2018-0802, and CVE-2018-0798.
CVE-2018-0798 — anomalous Equation Editor native stream high CVE likely CVE_2018_0798_EQUATION_NATIVE_ANOMALY

Embedded Equation Editor OLE data contains anomalous native stream bytes consistent with a CVE-2018-0798-style Equation Editor exploit. This is treated as likely CVE evidence because the Equation object is malformed and payload-like, but it does not match the exact public matrix-overflow byte signature.
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 2

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`ooxml_oleobject_00.bin`	ooxml-ole-object	OOXML embedded OLE part: ppt/embeddings/oleObject1.bin	3584 bytes
SHA-256: `5545ed0aeed687d9b88cf9396ded4cb824c66e2cc7d9f6fc794fa6ac95d4d900`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL
`ooxml_oleobject_00_ole10native_00.bin`	ole-package	OOXML ppt/embeddings/oleObject1.bin Ole10Native stream: Ole10Native	1360 bytes
SHA-256: `d4240351adedc18251cf45e7f53f4a24f976a2599c52f05ea677a7606909d27d`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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