Malicious RTF — malware analysis report

Static analysis result for SHA-256 fdc544e96f7f2d22…

MALICIOUS

RTF

9.0 KB First seen: 2021-07-07
MD5: 00ac4bbabdb2e5924f693731a0c8537d SHA-1: 3f4c2045d171cd38c0dabd70d1153790d6f3cbb5 SHA-256: fdc544e96f7f2d22395cf706f6ee20aabac275338c346e1f6abca0d78fdd66f0
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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