RTF malware analysis — malicious · 80b0e707b033e4d3

MALICIOUS

RTF

19.1 KB First seen: 2022-10-12

MD5: d0d43cfdfb7284ce45934e28009df6b6 SHA-1: 42fa11b5c8df090f71ffd8622be0e39ffb3f2d0d SHA-256: 80b0e707b033e4d3c8a68a6e34c7cc30120c8b7bbb689971efb145e2f2891900

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1204.002 Malicious File T1059.001 PowerShell

The RTF file contains OLE object data and uses \objupdate to force OLE activation, indicating an attempt to exploit embedded objects. The presence of an Ole10Native stream further supports this. While no specific script was extracted, the heuristics strongly suggest a malicious OLE object designed to execute code upon opening.

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_off00001999.bin` `df2c97f46577766c00e3e8de901b3a8af4fa131f532306674152c34798bfaf78`	rtf-objdata-decoded	RTF \objdata at offset 0x1999	3663 bytes

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