Malicious RTF — malware analysis report

Static analysis result for SHA-256 9a7d37fa5e495d21…

MALICIOUS

RTF

52.1 KB
MD5: 6c07b096ab80a9b90c240d89ae56789d SHA-1: b2c484f51ee515ffbe2d85bb5dfd2bbc81fc0851 SHA-256: 9a7d37fa5e495d213c82695c7d48798c4051f19146db57d84ef9c951effddbf9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that leverages a known vulnerability in Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for arbitrary code execution when the object is processed. The exploit targets a font record overflow within the Equation Editor to achieve this. No further stages or specific family indicators were identified.

Heuristics 4

  • CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882
    Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
  • 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
  • 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

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000111.bin
bc4455a59e79cf177fdc3de6fabc990dd846e7687265d8b30f4e68b6450b1ca6		 rtf-objdata-decoded RTF \objdata at offset 0x111 3631 bytes

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