RTF malware analysis — malicious · 31f380e91dcd3ea5

MALICIOUS

RTF

135.7 KB First seen: 2022-10-05

MD5: e1e1237a89b0786b23f8cfe63fb16bcc SHA-1: 4af6c0e60e5c2c201c899cf99866d22b754dcd40 SHA-256: 31f380e91dcd3ea59e396a91c5d35d31bdc0a37eae23ece5f31ac74ef2af13af

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 an \objupdate event, indicating it's designed to exploit OLE vulnerabilities for code execution. The presence of OLE object data strongly suggests the file is a dropper or exploit container. No document body or script content was available for further analysis, limiting the ability to identify specific payloads or delivery mechanisms.

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_off000004af.bin` `cd043588546ed4a7504c52dc3a1e0cc0dae6717ae8cae93cb92141af46468d46`	rtf-objdata-decoded	RTF \objdata at offset 0x4AF	4167 bytes

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