Malicious RTF — malware analysis report

Static analysis result for SHA-256 e6765bf9dff16f28…

MALICIOUS

RTF

56.0 KB
MD5: f6a08ae8bccfd5ac55579c2a71b09faf SHA-1: adef0767bc93bfdd54881521da7fb8d1f5ed9645 SHA-256: e6765bf9dff16f28b8ac0c3170e6d371955fa6b01db800bfa02b7edb9eb1df49
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 Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the malformed object is processed. The exploit targets a font record overflow within the Equation Editor.

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_off0000010d.bin
a5f14e42b00947b5b3ad5f7f15c8017cc26dfb6522a7cf62e5ea4fe43257450d		 rtf-objdata-decoded RTF \objdata at offset 0x10D 3631 bytes

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