RTF malware analysis — malicious · 8b548bedacf58a77

MALICIOUS

RTF

28.3 KB First seen: 2023-06-01

MD5: 63c35801f8976124d6d45b9290bb627e SHA-1: 5f1799629aa5e0e4061f2fb49176575c98ea0fa8 SHA-256: 8b548bedacf58a77664138f546c0b73c847ff48c0a630b1605c71096ec34c05f

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and an \objupdate directive, indicating it's designed to embed and activate malicious objects. The presence of Ole10Native stream further supports this, suggesting an attempt to exploit vulnerabilities or deliver a payload upon opening. Without further script or body content, the exact payload and delivery mechanism remain unclear, leading to an 'unknown family' classification.

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_off00001d06.bin` `63f6513b9f1047c44bc1149b931150042f41ffe020d814e01d34c2b285c25ddd`	rtf-objdata-decoded	RTF \objdata at offset 0x1D06	4180 bytes

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