Rtf.Exploit.CVE_2017_11882-6584355-1 RTF malware analysis — malicious · 797ed59cea368cbf

MALICIOUS

RTF

7.2 KB First seen: 2019-05-16

MD5: 8ee5ad75bb631f07bd05193580c5037d SHA-1: cd55bd39131ab3412737ed5cfffb84b856695fff SHA-256: 797ed59cea368cbf4d8606c736888bdbcf2c60ae30b7ef24ac65ac12b50e1efd

240 Risk Score

Malware Insights

Rtf.Exploit.CVE_2017_11882-6584355-1 · confidence 95%

MITRE ATT&CK

T1203 Exploitation for Client Execution

The file is identified as malicious due to critical heuristic firings indicating the exploitation of the Equation Editor vulnerability (CVE-2017-11882). The presence of OLE object data and the ".bin" artifact further support this finding. This exploit allows for arbitrary code execution on the victim's machine.

Heuristics 6

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
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.
ClamAV: Rtf.Exploit.CVE_2017_11882-6584355-1 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Rtf.Exploit.CVE_2017_11882-6584355-1
\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
Suspicious extracted artifact medium EXTRACTED_FILE_STATIC_TRIAGE

One or more files extracted from inside this sample matched static suspicious-content checks such as script obfuscation, encoded payload blobs, packed data, or execution/download terms.

Extracted artifacts 1

Files carved from inside the sample during analysis.

Filename	Kind	Source	Size
`objdata_00_off0000003c.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C	3643 bytes
SHA-256: `d490e09f5d5472f231f8ce328c555d4a67da7c748f706992c3c26dcbf6e5c685`
Detection ClamAV: No threats found Obfuscation or payload: likely Static shellcode analysis found candidate code region(s). Indicators: SC_GETPC_CALL

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