RTF malware analysis — malicious · 2580898bcb319660

MALICIOUS

RTF

28.3 KB First seen: 2023-06-17

MD5: 1cc42155aac8301b04acf2dd24e00037 SHA-1: 400726cc2ebbe7567d9abe0a7609398d21e7a094 SHA-256: 2580898bcb319660a9ade85c4c70a9b4b2644be647ea4b6829110bde3b33e7f5

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.002 Spearphishing Attachment T1204.002 Malicious File

The RTF document contains OLE object data and uses \objupdate to force OLE activation, indicating an attempt to exploit a vulnerability. The high heuristic scores for RTF_OBJDATA and RTF_OLE10NATIVE_STREAM further support this. The specific exploit mechanism is likely related to OLE object handling, leading to arbitrary code execution.

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_off00001e79.bin` `40240718fab1027bf92ab0495bb87211269081afa2aac271ad1d7adbe5cd5789`	rtf-objdata-decoded	RTF \objdata at offset 0x1E79	4205 bytes

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