RTF malware analysis — malicious · 0570c34ae9f6a01f

MALICIOUS

RTF

9.6 KB First seen: 2019-03-10

MD5: b2e7c806fc167075dbfb05198b337496 SHA-1: 65c9d02178450b2fcd24ccb059836ef34c94e5ca SHA-256: 0570c34ae9f6a01fc74f534d42a3e8f370464b4d61c07cd6464907e738818928

220 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains embedded OLE object data and specifically triggers heuristics related to Equation Editor exploitation and automatic OLE activation. ClamAV detection confirms this is a known exploit for CVE-2017-11882, which allows for arbitrary code execution. The file's purpose is to leverage this vulnerability for initial execution.

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	4780 bytes
SHA-256: `49fcc9068efc21ba1680decb87244cfbf70dc8fb89e32e737e6f410f8c30b5e6`

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