Malicious RTF — malware analysis report

Static analysis result for SHA-256 6549156ba12a6d89…

MALICIOUS

RTF

51.0 KB
MD5: 9fa50b8cb9a28aa73f6d2b5b228fff96 SHA-1: 4e8ff155f12eca448026b69083da8b244b7b26b8 SHA-256: 6549156ba12a6d89d4d82379787e9397899c869f13b60b6195e12c197973f04b
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in the Equation Editor. This vulnerability allows for the execution of arbitrary code, 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_off00000117.bin
124ad6408c95aa16d03208ee3315c9d79de184b9fafe27c3c0410c70710c084a		 rtf-objdata-decoded RTF \objdata at offset 0x117 3631 bytes

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