RTF malware analysis — malicious · c833df5215cc5ca4

MALICIOUS

RTF

26.6 KB First seen: 2023-06-01

MD5: bbd47a3e9fdd470ece1973e26acbd89a SHA-1: 0a7908cf1f7b22116604d98d852fc628f2aa544d SHA-256: c833df5215cc5ca43eb869af5b465c03043674e9522aae2cfb7038c7bb4c4579

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and uses \objupdate to force OLE activation, indicating an attempt to exploit embedded objects. The presence of Ole10Native stream further supports this. While no specific payload or script was directly extracted, the heuristics strongly suggest a malicious RTF designed to exploit OLE vulnerabilities for code execution.

Heuristics 3

Ole10Native stream in RTF OLE object high CVE related RTF_OLE10NATIVE_STREAM

RTF contains an embedded OLE object with an Ole10Native stream. This is a strong payload-container signal and is related to Word/OLE exploit delivery, but it is not specific enough on its own to assign a CVE.
\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.

Filename	Kind	Source	Size
`objdata_00_off000016f0.bin` `f91af34264f68044ad13cf3163ed2f7ffd46c5bfd221970db2471c29ac036e13`	rtf-objdata-decoded	RTF \objdata at offset 0x16F0	4173 bytes

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