RTF malware analysis — malicious · 82c01d072eb58975

MALICIOUS

RTF

8.3 KB

MD5: 1fef2b3d8bfbed3080da74f0ad805e75 SHA-1: 4bb3509f719ef4dc107f46c059564b24da29f82d SHA-256: 82c01d072eb58975956790622623829f4c714377bb13993cb5f1d34632454a61

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, specifically triggering heuristics related to Microsoft Equation Editor and OLE object activation. ClamAV detection confirms this is a known exploit for CVE-2017-11882, which allows for arbitrary code execution. The exploit is likely delivered via spearphishing.

Heuristics 5

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.
Equation Editor CLSID critical RTF_EQUATION_EDITOR

Equation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
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_off0000003e.bin` `22f8a68eba1ff77f27d1805ab8caf0caeb2489fa6afeebbc0470b96491cbdf2c`	rtf-objdata-decoded	RTF \objdata at offset 0x3E	4152 bytes

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