Malicious RTF — malware analysis report

Static analysis result for SHA-256 e6c1dac120c5e04f…

MALICIOUS

RTF

61.0 KB
MD5: 8010bc5c85fde14155fd0fb229eb3ba9 SHA-1: ed7e9b9892693e11c5cbff697a4281a0827919f6 SHA-256: e6c1dac120c5e04f797d265d8bea1ef0cfe2a29afcdedcc7d0ed2c5aa3a807a9
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that leverages the CVE-2017-11882 vulnerability in Microsoft Equation Editor. This vulnerability allows for arbitrary code execution when the object is processed, indicating a likely exploit delivery mechanism.

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_off00000112.bin
e5715b26ddcff7a1538add0e8996ac52e1be9f11edee9fd2532c616ffc30baab		 rtf-objdata-decoded RTF \objdata at offset 0x112 3631 bytes

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