Malicious Office (OOXML) — malware analysis report

Static analysis result for SHA-256 5ac4e07ee9217205…

MALICIOUS

Office (OOXML)

546.5 KB Authoring application: Microsoft Office PowerPoint 16.0000 First seen: 2018-08-14
MD5: 6a2d0d8871fd3a92db50d411d389b65e SHA-1: eeeb4ce18a1b6d9525b60a829a0450bd4d50c665 SHA-256: 5ac4e07ee92172053ac812d0618db818f04fe6e2d4b0aed03e9d93211279e84c
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: 7864418eb8a86f5b32a2b856a3c1bc55b5d33c3b992d01f909741c7e30e9cbd4
ooxml_oleobject_00_ole10native_00.bin ole-package OOXML ppt/embeddings/oleObject1.bin Ole10Native stream: Ole10Native 1975 bytes
SHA-256: c567f924b9d62f87ad09c547f4dbe71a7cc95d37c219bce8fff2608637aae95e

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