RTF malware analysis — malicious · b56d5c3e60c20fab

MALICIOUS

RTF

14.2 KB First seen: 2019-05-16

MD5: d0653ac4ce0caaa3fd474b3fe7185a22 SHA-1: 29228a6b63768eeeac82e2936f1a310f98791f4d SHA-256: b56d5c3e60c20fab0794e88a61c081d2a2ef6d7cb730d7456fbfeb3a149e43f3

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	4156 bytes
SHA-256: `5506a8566f477032a9ca37ee03f85a75d1b039baef9f08b9d8f61214254cdf12`

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