Malicious RTF — malware analysis report

Static analysis result for SHA-256 1236b3d2a5ef38d1…

MALICIOUS

RTF

49.2 KB
MD5: ade37a35fefc08f26c1a06574e343047 SHA-1: f9be3db43c51d044969f0161c502e50bb1c4792b SHA-256: 1236b3d2a5ef38d13aa45f865316643369812601fab9db775d2a99fc3da21159
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 Microsoft Equation Editor (CVE-2017-11882). This vulnerability allows for arbitrary code execution when the document is opened, enabling the attacker to compromise the victim'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_off00000118.bin
7e81c61a449dfcf3c34b90180c2f452af783f9721fc10717ab6e6bc02b7f9823		 rtf-objdata-decoded RTF \objdata at offset 0x118 3631 bytes

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