RTF malware analysis — malicious · 8d364690bfeaaaee

MALICIOUS

RTF

8.1 KB First seen: 2018-06-14

MD5: 6f843fd56a59adbcad91581b4fd72f19 SHA-1: 4435b70ec894d37b1b455c8c66fc9df1d34d1ca6 SHA-256: 8d364690bfeaaaeedd6e329550a1c8c810539222098f14e6feab9e0702bb313e

220 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains embedded OLE object data and triggers heuristics related to Equation Editor exploits, specifically identifying CVE-2017-11882. This indicates the file is designed to exploit a vulnerability in the Equation Editor component to achieve code execution on the victim's machine. No specific malware family could be identified.

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_off0000003b.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3B	4135 bytes
SHA-256: `8b7ff888ccb655a74e78b1697d64c916f34b420e737eaa166da2d56002fd406e`

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