RTF malware analysis — malicious · a0a795d76dd7a4f3

MALICIOUS

RTF

21.4 KB

MD5: 4cc659befba7aaf53375613494faad9e SHA-1: d14430a13a0c7879eafc9bab66ec31f9631a3ff5 SHA-256: a0a795d76dd7a4f36bd9bd6ec65a3ba11293eefcbba4e290f2366e9932f60e0b

160 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1027 Obfuscated Files or Information

The RTF file contains embedded OLE object data, specifically triggering heuristics related to Equation Editor vulnerabilities and OLE object activation. This strongly suggests an attempt to exploit a known vulnerability in the Equation Editor component to achieve arbitrary code execution. No document body or scripts were extracted, but the heuristics are sufficient to identify the attack vector.

Heuristics 4

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.
Equation Editor CLSID critical RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
\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 2 \objdata section(s) — embedded OLE objects

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000126b.bin` `2dec77c99e10ce72b0b9ae1c0aad8583c1a07fe7690f08e425d8b174d9939e23`	rtf-objdata-decoded	RTF \objdata at offset 0x126B	3667 bytes

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