RTF malware analysis — malicious · d9e5625f31de54fa

MALICIOUS

RTF

24.8 KB

MD5: 82166b846d9a79322fdc33b0e6c82e38 SHA-1: bb323b30f0cfdfd99e32aeaff13cee6b04a9d4b3 SHA-256: d9e5625f31de54faa7f8ba5210c4f0458cd85966a1c59c2934d4e67f59acc143

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and triggers OLE activation via \objupdate, indicating it's designed to embed and execute an OLE object. The high heuristic scores for RTF_OBJDATA, RTF_OBJUPDATE, and RTF_OLE10NATIVE_STREAM strongly suggest this is a malicious RTF document. The embedded OLE object is likely a downloader or dropper for a second-stage payload.

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 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off00002050.bin` `b86ab23ddf23b20e3e7438b533582b913b8eb0d74f93845f268f83e9df56654c`	rtf-objdata-decoded	RTF \objdata at offset 0x2050	3671 bytes

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