Malicious RTF — malware analysis report

Static analysis result for SHA-256 a2149595a464eaf5…

MALICIOUS

RTF

7.2 KB First seen: 2021-01-15
MD5: c738cbfe4133c04fc955a7ac0eb31ce6 SHA-1: 4082c7959854c778257a7851fe93b2aa5de5ec9d SHA-256: a2149595a464eaf50ece9b3d6cd7fac065331a849407de718eb637e71f5fddaf
180 Risk Score

Heuristics 4

  • Equation Editor CLSID critical CVE likely RTF_EQUATION_EDITOR
    Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
  • 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.
  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off00000032.bin rtf-objdata-decoded RTF \objdata at offset 0x32 3637 bytes
SHA-256: 56859c4a8f1a8c5a26a6d5488dd4149701e16caf84de7972d71d2294c4fe589e

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