Malicious RTF — malware analysis report

Static analysis result for SHA-256 6ecde53730de264f…

MALICIOUS

RTF

70.1 KB
MD5: e961f07f9739ebbeb9460f56690c71f5 SHA-1: 9c30dc96855e4eaa1a3b6b8d08ed7a6b617154da SHA-256: 6ecde53730de264fe9f39a8828cb9da9524545c29678cd397c8930d387477115
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The sample is an RTF document that contains an embedded OLE object. Static analysis identified critical heuristics indicating the presence of the CVE-2017-11882 vulnerability, which is commonly exploited via Microsoft Equation Editor. This vulnerability allows for arbitrary code execution.

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_off0000010f.bin
eef844321063b40310105c3a0716453cb0909e0e84bf61991b3e2cda61f0f759		 rtf-objdata-decoded RTF \objdata at offset 0x10F 3631 bytes

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