RTF malware analysis — malicious · 11ce880de1396d1d

MALICIOUS

RTF

19.2 KB First seen: 2018-09-04

MD5: 409239eded911637708f859255dc90c8 SHA-1: 96d1950509af3a9a94f0a9d8a16bc0284e3149f6 SHA-256: 11ce880de1396d1d50a1240288fdc0273b7a2cd49ce6012b4f759b8831fb7e8b

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	4649 bytes
SHA-256: `2fd479d75a099b845d26a23f82eec36ec83d7994595ece158f60a6cd070de302`

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