Malicious RTF — malware analysis report

Static analysis result for SHA-256 370bb04bb4879135…

MALICIOUS

RTF

9.0 KB First seen: 2021-07-07
MD5: 9f71fc32d87667ccdffe2e4edfe84b08 SHA-1: bf43556e8e39c2250cbd5951001d1fbddfd30490 SHA-256: 370bb04bb48791353d1a3e074f2b28606c5660ec6261ab816ad11b018816419f
100 Risk Score

Malware Insights

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

The RTF file contains an embedded OLE object, specifically triggering a critical heuristic for Equation Editor. This indicates the file likely exploits a known vulnerability in the Equation Editor component to achieve arbitrary code execution upon opening. The presence of OLE object data further supports the exploitation vector.

Heuristics 3

  • Equation Editor CLSID critical CVE likely 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_off00000031.bin rtf-objdata-decoded RTF \objdata at offset 0x31 3628 bytes
SHA-256: e1b6bbffc07bdfba7c7852e69b2afbe0bb8a133fcbb1b4028ce2a11f2f238485

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