RTF malware analysis — malicious · b5457e615d4b5f53

MALICIOUS

RTF

14.1 KB First seen: 2018-07-27

MD5: f1f40715df319c2de35b3c33b860d208 SHA-1: 69fa0c470d173b66b156f86b9835b399e5a4f9f6 SHA-256: b5457e615d4b5f53370134ea7b99f70e4b0932cb485a447b5503834d67818a73

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	4143 bytes
SHA-256: `9eebad89bcdfe4d57865234b5739409937553c6089828b900e455be47b849936`

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