Malicious RTF — malware analysis report

Static analysis result for SHA-256 481b8917d66728a4…

MALICIOUS

RTF

48.7 KB
MD5: d9be117a4bd4877e6fef12e1b1318c07 SHA-1: b0391216648e77d17c64347dbbb493215cfa79cb SHA-256: 481b8917d66728a4bf0fc580293b536f137b217e2c579ea95f752999e375f553
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in 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_off00000114.bin
2fbece6da527493000e63fe4151ceb42bbdb79a2843360d0c0312fa0f688acf4		 rtf-objdata-decoded RTF \objdata at offset 0x114 3631 bytes

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