RTF malware analysis — malicious · 6106798ef0ef76b0

MALICIOUS

RTF

19.2 KB First seen: 2018-09-04

MD5: 942012e4a36776adb135ca968aad6b59 SHA-1: ebe458082fab803659fa06faf2d651d470677c6b SHA-256: 6106798ef0ef76b08a826bcc2a3ec3700533b1c55f6ab32c740cfbfd3cedcb95

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	4648 bytes
SHA-256: `b9c283d1bfbab4f962532610c58d4eeea1bc63db205741683dd4652d0229cf09`

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