Rtf.Exploit.CVE_2017_11882-6584355-1 RTF malware analysis — malicious · 6707acfdf6df4bca

MALICIOUS

RTF

63.3 KB First seen: 2019-09-30

MD5: 68f4d81903da10859586f4283c587034 SHA-1: 055da6b5e3723248fd559e4be805c58b7c39d3fb SHA-256: 6707acfdf6df4bca13564cbd1f3e3bb6eda57177ed75ab4fa2e89e7d4cc69f2f

240 Risk Score

Malware Insights

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

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is an RTF document containing an OLE object that exploits the Equation Editor vulnerability (CVE-2017-11882). This vulnerability allows for the execution of arbitrary code, likely to download and run a secondary payload. The ClamAV detection name directly identifies the exploit.

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_off0000dc91.bin`	rtf-objdata-decoded	RTF \objdata at offset 0xDC91	4157 bytes
SHA-256: `629f145b0272cdcf0f0fbeafba7fccd95911db52ca0b8045ad333a023410d1d3`
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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