Malicious RTF — malware analysis report

Static analysis result for SHA-256 eb65540160add779…

MALICIOUS

RTF

81.6 KB
MD5: 60f04079487975ba6577b06c01914170 SHA-1: af9b10ef74a3e1057ec58aa64502b9ab7ae9a1c6 SHA-256: eb65540160add779f136a889cfb2d3ca446bb63bc6ef335e330a2c36030b8ce3
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that exploits the CVE-2017-11882 vulnerability in Equation Editor. This vulnerability allows for arbitrary code execution when the document is opened, likely to download and run a secondary payload.

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_off00002390.bin
18a7161173fef692546a812c4fc8aef24748d99f36e4aa2db094b1b0e04cdc38		 rtf-objdata-decoded RTF \objdata at offset 0x2390 3631 bytes

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