RTF malware analysis — malicious · 8da6c17dfbf7c241

MALICIOUS

RTF

23.3 KB First seen: 2023-03-16

MD5: 2c83be7df56e4a884cddce5e8cc8f77c SHA-1: 4ad6116ecbc2e5f953a7d1ba106ba416d677b70b SHA-256: 8da6c17dfbf7c2414b4d2c72b23b7242b07feec00e7a1e896408a4b25fac3315

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data that is forced to activate via \objupdate, indicating an attempt to exploit OLE object handling. The presence of the Ole10Native stream further supports the embedding of executable content. This mechanism is commonly used to deliver and execute secondary payloads, likely leading to a broader infection chain.

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_off00001c36.bin` `1a60309f6cab4e1485da66bc9a3c9df59d9b0e5c6240411f6ffc5f6c152c659c`	rtf-objdata-decoded	RTF \objdata at offset 0x1C36	3680 bytes

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