Malicious RTF — malware analysis report

Static analysis result for SHA-256 2e4f388d77bcac95…

MALICIOUS

RTF

8.5 KB First seen: 2020-12-25
MD5: 054bf633e6e203ed4be3875c49b08b2b SHA-1: d1bcd9903b42099f0797f7cc01f2af3716c98780 SHA-256: 2e4f388d77bcac959c3ccc77a7dc5419dab4187dd813f554609e4f966c0dd750
260 Risk Score

Heuristics 6

  • 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
  • ClamAV: Rtf.Exploit.CVE_2018_0802-6825822-0 critical CLAMAV_DETECTION
    ClamAV detected this file as malware: Rtf.Exploit.CVE_2018_0802-6825822-0
  • Equation Editor object class critical RTF_OBJCLASS_EQUATION
    Object class 'equation.3' references Equation Editor
  • \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
  • 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_off000000fe.bin rtf-objdata-decoded RTF \objdata at offset 0xFE 3531 bytes
SHA-256: a7f6a47ed2a4627ce20a1378f74eaaf6cd015a86f5c4b0f1bdf053f4c625073e

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