Malicious RTF — malware analysis report

Static analysis result for SHA-256 ce11636493303073…

MALICIOUS

RTF

56.1 KB
MD5: 02391d7967255312ff8c93b5d48df2e7 SHA-1: a2217d0536adf3cf9b75a9d4d634f991d28a597a SHA-256: ce1163649330307397b7d121aeb9cebf0b95e5099b5b4f83567237633d61872d
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that leverages a known vulnerability in the Equation Editor (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code upon opening the document, 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_off0000010b.bin
e85043958104adb3146e520b6bf431aea06d8f981af323c1bc31ffbff0524827		 rtf-objdata-decoded RTF \objdata at offset 0x10B 3631 bytes

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