RTF malware analysis — malicious · 2b43a577b32938ac

MALICIOUS

RTF

14.1 KB First seen: 2019-11-20

MD5: 12a5155c0915138d07e4b54439a46734 SHA-1: aeb423424716aaace8a21bf25c68004f4c370210 SHA-256: 2b43a577b32938ac14a1efb184d32672661699da9525ff0b380116ca7aadac17

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The RTF document contains embedded OLE object data, indicated by RTF_OBJDATA and RTF_OLE10NATIVE_STREAM heuristics. The RTF_OBJUPDATE heuristic suggests that the embedded object is designed to be activated automatically, likely leading to the execution of a malicious payload. No specific family could be identified, and no further IOCs were extracted.

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_off00000801.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x801	4132 bytes
SHA-256: `1cca2827fadb5e522718f924f1aa39be4635521801f5bff02c0a71f97571abd0`

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