Malicious RTF — malware analysis report

Static analysis result for SHA-256 b6dee7815a90dda9…

MALICIOUS

RTF

72.0 KB
MD5: 01532b868d2df214dadbcc30502d6422 SHA-1: 8134962474ce9096657d9b4b52b0b97bf93ace22 SHA-256: b6dee7815a90dda96e32af8821c2dbb397869be7b536da42f17c9b37006f5a4c
100 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a critical vulnerability in Microsoft Equation Editor (CVE-2017-11882). This exploit allows for the execution of arbitrary code, 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_off00000139.bin
f1e7ce6675726a183a691123312d0eece4b0aee877c056b8fd488d1a6f5fbd6c		 rtf-objdata-decoded RTF \objdata at offset 0x139 3631 bytes

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