RTF malware analysis — malicious · 464299bfc90a49f3

MALICIOUS

RTF

14.3 KB First seen: 2019-04-18

MD5: 4c4079087d013bf68316f6c4a03c2cc2 SHA-1: 251b0920c0f0c76d619ea52badc26b3af1d568a7 SHA-256: 464299bfc90a49f36dbe397250e8eacfcac75d97de11f35bfff082bf776b82c7

220 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is an RTF document containing an embedded OLE object that triggers the Equation Editor vulnerability (CVE-2017-11882). This vulnerability allows for arbitrary code execution, which is commonly used to download and execute further malicious stages. The ClamAV detection name directly indicates the 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_off000014bb.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x14BB	4654 bytes
SHA-256: `705f6fbe98e48868cac07d50b0bda49752f24d3180c1dde5db203556d0a4bd66`

Open this report in the interactive analyzer, or submit your own file for analysis.