RTF malware analysis — malicious · e665c583687ab8df

MALICIOUS

RTF

8.2 KB First seen: 2019-08-04

MD5: a32d8ff4aa8fab7ea1b2dc857eae6e08 SHA-1: f60cbb87321da3f6112e933d87dfeed2b168243f SHA-256: e665c583687ab8df1d5201a0bad7dfd5f9cfcc26fd9d6f11bf522718857c048c

220 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains embedded OLE object data and is specifically flagged for exploiting the Equation Editor vulnerability (CVE-2017-11882). This exploit allows for arbitrary code execution upon opening the document. The ClamAV detection further confirms the presence of this known exploit.

Heuristics 5

Equation Editor CLSID critical CVE likely RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
Automatically linked OLE object high RTF_OBJAUTLINK

RTF contains \objautlink — an automatically linked OLE object surface that can be updated or activated when Word opens the document.
\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_off0000003f.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3F	4154 bytes
SHA-256: `cac9cef56cd4c4442cd3000fcbc37bae8c735ab499a9000c6f2dd03a0a54742f`

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