RTF malware analysis — malicious · 3f4c0e58c14caf84

MALICIOUS

RTF

24.5 KB First seen: 2023-02-22

MD5: b86b06ebcdf71b18fec310e39c948ff1 SHA-1: 52dce6ece35da7e33ae1b308b41038fef9b8b4a9 SHA-256: 3f4c0e58c14caf84ce5dde2e477ebcda82cba33ad0144e1e5b4f465018382964

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 execute embedded content. The presence of OLE object data and the activation heuristic strongly suggest this file is designed to exploit OLE vulnerabilities or deliver a malicious object. No document body or script content was available for further analysis, limiting the ability to determine the exact payload or delivery mechanism.

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_off000016fa.bin` `f0c2f213a7b344dbc61f33f82608b984bddb005d6442fdb03ea344fb1d0711ae`	rtf-objdata-decoded	RTF \objdata at offset 0x16FA	4172 bytes

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