RTF malware analysis — malicious · b21ab41bf5140eb4

MALICIOUS

RTF

86.0 KB First seen: 2024-06-27

MD5: be9f41b7f0e19afe5095d1308dce14e8 SHA-1: e4951b2a9daec2d95ebd7c19310347b6154a857f SHA-256: b21ab41bf5140eb41e093ea9649f5e2625dbc571353fb2fac6466fbd7b8fd6dd

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The RTF file contains OLE object data and triggers heuristics for automatically linked and updating OLE objects. This suggests an attempt to exploit OLE vulnerabilities to execute embedded content, likely leading to a secondary payload. The specific nature of the payload cannot be determined from the available heuristics and truncated document body.

Heuristics 3

Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\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_off00001f67.bin` `2a4736428079b446662fb241d79567921abd0f2ef85fc18e5f286fad49f4c150`	rtf-objdata-decoded	RTF \objdata at offset 0x1F67	1900 bytes

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