RTF malware analysis — malicious · 57bda3450d93c226

MALICIOUS

RTF

90.5 KB First seen: 2018-11-20

MD5: 83e715211d0ed8e721c94c597aca3958 SHA-1: 7b77d28179e1edf9170a9c82a063ee05718c21ef SHA-256: 57bda3450d93c226750a152ec79acdfa2dc97b8d93c2c92cc70bdb959cc79e23

120 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains OLE object data and triggers an \objupdate event, indicating an attempt to activate embedded objects. ClamAV detection confirms this is a known exploit for CVE-2017-11882, which targets the Microsoft Office Equation Editor. This exploit allows for arbitrary code execution.

Heuristics 3

ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
\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_off0000003b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3B	4158 bytes
SHA-256: `702c9ac6020b961a34f0744d50ee6728799b83f62b01dac4333b34d63e8d4c2f`

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