Malicious RTF / .DOC — malware analysis report

Static analysis result for SHA-256 b0d1e62899bc9eff…

MALICIOUS

RTF / .DOC

76.1 KB Authoring application: Msftedit 5.41.15.1515
MD5: cd07f0a3f5ed149d0bff0954dd82e7f7 SHA-1: 80feb210ecccd7f694068661f1d7c6f5f7220a61 SHA-256: b0d1e62899bc9eff9c55b35cb4d8e2d5f166ab30a67bd5d66ae362cfc5fde821
140 Risk Score

Malware Insights

MITRE ATT&CK
T1559.001 Component Object Model Hijacking

The RTF document contains an embedded OLE object, identified by RTF_OBJDATA and RTF_OBJEMB heuristics. Further analysis reveals a Package object class (RTF_OBJCLASS_PACKAGE) and a PE header within hex data (RTF_MZ_HEX), indicating the embedded object is likely an executable. The SHA256 hash of the file is provided as an IOC.

Heuristics 4

  • PE header (with DOS stub) in hex data critical RTF_MZ_HEX
    Hex-encoded PE (MZ + DOS stub) found inside RTF — likely an embedded executable payload
  • Package object class high RTF_OBJCLASS_PACKAGE
    OLE Package object — can wrap arbitrary files
  • 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_off000000cf.bin
f7da8866b75ac455764c36d5ae336d4e6bd7de35075b3bf6a179d35e66f7aab3		 rtf-objdata-decoded RTF \objdata at offset 0xCF 34112 bytes

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