RTF malware analysis — malicious · 5a1c6f41f23eb106

MALICIOUS

RTF

19.3 KB First seen: 2018-09-04

MD5: 16721fae3a34745ddd07f43bcf76e450 SHA-1: 1192cf1517ca191fff913997bb1ac213193503f7 SHA-256: 5a1c6f41f23eb1066a7ff74e8fd0962659f3b94f2673b04a103c7f9945e5a91f

100 Risk Score

Malware Insights

MITRE ATT&CK

T1566.001 Spearphishing Attachment T1203 Exploitation for Client Execution

The sample is an RTF document containing OLE object data and an \objupdate directive, indicating an attempt to exploit OLE activation for code execution. The presence of these elements strongly suggests a spearphishing attachment used to deliver a malicious payload. No specific family could be identified from the available evidence.

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_off00001676.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1676	4644 bytes
SHA-256: `3bf1af0e5b9d05978586e7d8ed063a16bc2646391011113f5e45ced7a5ac68de`

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