Rtf.Exploit.CVE_2017_11882-6584355-1 RTF malware analysis — malicious · ba70d0fea452de75

MALICIOUS

RTF

8.2 KB First seen: 2019-05-10

MD5: 2fdfbbcf5da065ddb39f505040d13b26 SHA-1: 75cdee798ccea39a6fa57a1b0cf398129e49c451 SHA-256: ba70d0fea452de754f45deac1b0a592300a1701538c72a5a2a6da4488adebd0f

220 Risk Score

Malware Insights

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

MITRE ATT&CK

T1203 Exploitation for Client Execution

The sample is an RTF document containing an embedded OLE object that leverages the Equation Editor vulnerability (CVE-2017-11882). This exploit allows for the execution of arbitrary code on the victim's machine. The ClamAV detection name directly identifies the specific exploit used.

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
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

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	4156 bytes
SHA-256: `a61afbcdd54c7730a3014d39c6ca28cf9d437f91bec6e4308cf3bd82ae9e5890`

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