Malicious RTF — malware analysis report

Static analysis result for SHA-256 d08661730cbde6a4…

MALICIOUS

RTF

9.3 KB First seen: 2020-09-07
MD5: 96466f7a3432cf173a3334be316fb9d1 SHA-1: 07e6aa685e6a0f45bdb51f8b172811f9d8d294f2 SHA-256: d08661730cbde6a4a5a6a68609263514b24f82782c95c270cb14325bc3f36ecc
60 Risk Score

Malware Insights

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

The RTF file contains an OLE object with an \objupdate directive, indicating an attempt to exploit a client-side vulnerability for execution. The presence of OLE object data suggests the file is designed to embed and activate external content, likely a malicious payload. Without further analysis of the embedded object, the specific family remains unknown.

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_off000015dc.bin rtf-objdata-decoded RTF \objdata at offset 0x15DC 1812 bytes
SHA-256: 25e184da01844f4a0e28bbe91605f2944aa16d39157c30677048ef9817d6aebb

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