Malicious RTF — malware analysis report

Static analysis result for SHA-256 06575c21e37d5259…

MALICIOUS

RTF

9.5 KB First seen: 2020-07-24
MD5: 8493fb8d04423e873821e4f1e2e86b74 SHA-1: 57b85974c214b50b04dad409782e279facbc866d SHA-256: 06575c21e37d5259caa4cab015dcc72ef2794cf9da9d1a57c083ef0315cf65a3
60 Risk Score

Malware Insights

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

The RTF file contains OLE object data and an \objupdate directive, indicating an attempt to exploit OLE object activation for code execution. The high-severity heuristic firing on \objupdate strongly suggests exploitation for client execution. While no specific family is identified, the technique points towards a malicious document delivered via spearphishing.

Heuristics 2

  • \objupdate forces OLE activation high RTF_OBJUPDATE
    RTF contains \objupdate — forces automatic OLE object instantiation when the document is opened, bypassing user interaction. Almost exclusively seen in Equation Editor exploit documents.
  • OLE object data medium RTF_OBJDATA
    RTF contains 1 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

FilenameKindSourceSize
objdata_00_off000014db.bin rtf-objdata-decoded RTF \objdata at offset 0x14DB 2031 bytes
SHA-256: cd57ec9f3a655f67e362f9471749f56dc40c423be4ed7a4311abf8468200b4a7

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