Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 c093cef6642387af…

MALICIOUS

Office (OOXML)

546.3 KB Authoring application: Microsoft Office PowerPoint 16.0000 First seen: 2018-08-14
MD5: 8a71dc4bb4da979f7a67ad14fdb17210 SHA-1: f6c1708f5d19eb851db75cf2e080505932cf0ae7 SHA-256: c093cef6642387afd20060ad3b9c46692ac6821cacd1132616f59f02be9d42ce
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The sample is a PowerPoint file containing an embedded OLE object that leverages the Equation Editor. High-severity heuristics indicate a likely exploitation of CVE-2018-0798, which allows for arbitrary code execution. This technique is commonly used to download and execute further malicious stages.

Heuristics 3

  • 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

Extracted artifacts 2

Files carved from inside the sample during analysis.

FilenameKindSourceSize
ooxml_oleobject_00.bin ooxml-ole-object OOXML embedded OLE part: ppt/embeddings/oleObject1.bin 4096 bytes
SHA-256: f9b0001afb33347722b335f88b655372ff3c5997f89899d21d1496d3d925260d
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML ppt/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 1592 bytes
SHA-256: e156863decc64b698a0ac0c1699e24e642ff9d29939e8fc1f1b6d8bb951fbced

Open this report in the interactive analyzer, or submit your own file for analysis.