Malicious RTF — malware analysis report

Static analysis result for SHA-256 d75ddbc3d900affb…

MALICIOUS

RTF

86.7 KB
MD5: 78ab6cfd013f327f750b996848b298dd SHA-1: 0480e6db63dda5bf8d9c250e7ca62e8dbb7c56b7 SHA-256: d75ddbc3d900affb67806d175d0351bcf1f83f268a2a4e0e8190079392300351
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers a critical vulnerability, CVE-2017-11882, in Microsoft Equation Editor. This exploit allows for the execution of arbitrary code on the victim's machine, likely to download and run a secondary payload.

Heuristics 3

  • 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.
  • 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_off000023d0.bin
8efd3d670c08fc4e0843ff196f8c8697a00c07de0c930ed19727005cb65a2aef		 rtf-objdata-decoded RTF \objdata at offset 0x23D0 3631 bytes

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