Malicious RTF — malware analysis report

Static analysis result for SHA-256 564f25e573fe1034…

MALICIOUS

RTF

54.7 KB
MD5: d1b42df73efac297d2835557257a7a29 SHA-1: d5d5b70c9eae2dfcd5ca9c5aef99978b0ae57929 SHA-256: 564f25e573fe10341fa7a69394ae3c05cebb0801818b8d63d0b74555efa184ae
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution

The RTF document contains an embedded OLE object that triggers a critical vulnerability in Microsoft Equation Editor (CVE-2017-11882). This exploit allows for arbitrary code execution, indicating a malicious intent to compromise the user's system.

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_off0000011a.bin
43a9ba75d2fc276d9fe36c344a6b359c8a617599d230458e03a7b9ccfb137bac
rtf-objdata-decoded RTF \objdata at offset 0x11A 3631 bytes