RTF malware analysis — malicious · 531686354189d669

MALICIOUS

RTF

14.1 KB First seen: 2018-07-27

MD5: 00b7505ab4dfa137e66ed14aac8addec SHA-1: f6294c45ec4e6b4beec695804407d3155a57f0b9 SHA-256: 531686354189d66996cbb68ec20907c66f0c9d76a199259abc9b035fe89f46a5

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_off00000800.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x800	4144 bytes
SHA-256: `263b85e3b24bc2f2bb322103cfda3ffe5fe70d02c3e03f4691160994f4c9bbce`

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