Malicious RTF — malware analysis report

Static analysis result for SHA-256 2db12cf5c6fdc067…

MALICIOUS

RTF

54.7 KB
MD5: 61f075d4e8e9b7b1095827b6063328cb SHA-1: 14776174e80fc23d8b980bcff34ae271a02b4aad SHA-256: 2db12cf5c6fdc067228f165df051cd7d0248ac840155e734381c554afe4dec70
160 Risk Score

Malware Insights

MITRE ATT&CK
T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The RTF file contains an embedded OLE object that triggers the CVE-2017-11882 vulnerability in Equation Editor. This vulnerability allows for arbitrary code execution, indicating the file is likely a weaponized document intended to deliver a malicious payload. No specific family could be identified.

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_off00000111.bin
d381ccb8b0ad832aa254584102c426aa49510f6275dd2ce410e883fb31ffddbc		 rtf-objdata-decoded RTF \objdata at offset 0x111 3631 bytes

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