RTF malware analysis — malicious · 2a9245e3aca5bf4e

MALICIOUS

RTF

19.3 KB First seen: 2018-09-04

MD5: 58accf9e00d6aaf08c0b59808a421621 SHA-1: 6bac1ee010d73708029bf1c4bd1d972c5aebef5a SHA-256: 2a9245e3aca5bf4e5fb40dc52e8b951fd8876f2750d58a3df12c3e2aebb687cd

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_off00001675.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1675	4658 bytes
SHA-256: `306a0991da43ee9fb15621404ff4bc8d6990cec267e684b90175ff8299af47c0`

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