Malicious RTF — malware analysis report

Static analysis result for SHA-256 96ed5f1e9f13f8b0…

MALICIOUS

RTF

51.6 KB Created: 2022-06-22 23:12:00 First seen: 2022-06-24
MD5: 6215faa31d4f4a7f9f5aacc228683f6b SHA-1: f48c4806540e90456389e57e0ae82781ccc7d6be SHA-256: 96ed5f1e9f13f8b038d83c1429575dca566f4f0f0cbd0ac05e92d7e4e160a004
202 Risk Score

Malware Insights

MITRE ATT&CK
T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains embedded OLE objects, specifically triggering critical heuristics for Equation Editor vulnerabilities. This indicates the document is designed to exploit the Equation Editor component to execute arbitrary code. No document body text or scripts were extracted, limiting further analysis of the payload's intent. The presence of the Equation Editor CLSID and object class strongly suggests an exploit targeting this component.

Heuristics 6

  • Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM
    RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
  • Equation Editor CLSID critical RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • Equation Editor object class critical RTF_OBJCLASS_EQUATION
    Object class 'equation.3' references Equation Editor
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects
  • Embedded OLE object medium RTF_OBJEMB
    RTF contains \objemb — embedded OLE object
  • Embedded URL info EMBEDDED_URL
    One or more URLs were extracted from the document. The URL itself is not a detection — see the per-URL labels for which channel (macro, JS, link annotation, document body, ...) reached each URL.
    URL http://schemas.microsoft.com/office/word/2003/wordml

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00004509.bin
55997227d86d936d015309c92036acf795c0a8bef1dfcde02aa6e0c01f0d5955
rtf-objdata-decoded RTF \objdata at offset 0x4509 7108 bytes