RTF malware analysis — malicious · dd3181db96a021b5

MALICIOUS

RTF

19.3 KB First seen: 2018-09-04

MD5: d6ae2073e81e22c02ad8965cf492b43d SHA-1: 5187325a586e914b1a5484a0a6e3d672b3b5b3f7 SHA-256: dd3181db96a021b52e96a46e0d34a04a1f396ccc2aa5d199295f8a8352f9f917

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	4646 bytes
SHA-256: `40e4dcc745a60aecaa7f6b21192334663bf73cdcc51e69b84a95bc5d600675f1`

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