RTF malware analysis — malicious · b75d3d428b70943d

MALICIOUS

RTF

127.8 KB First seen: 2019-01-12

MD5: cb46192fece1f18b350f77a035d6a347 SHA-1: 070633aad9588c471ecc3e423b6fe8d15aa65107 SHA-256: b75d3d428b70943dc963e0a6a142dfd5a3e4e0f009c5d564a9fd993f85f44ffb

120 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution T1566.001 Spearphishing Attachment

The file is an RTF document that contains OLE object data and triggers an \objupdate event, indicating an attempt to activate embedded objects. ClamAV specifically detects this as Doc.Exploit.CVE_2017_11882-6934206-0, confirming exploitation of the Equation Editor vulnerability (CVE-2017-11882). This exploit is commonly used to achieve arbitrary code execution, typically to download and run a second-stage malware payload.

Heuristics 3

ClamAV: Doc.Exploit.CVE_2017_11882-6934206-0 critical CLAMAV_DETECTION

ClamAV detected this file as malware: Doc.Exploit.CVE_2017_11882-6934206-0
\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_off00001f74.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x1F74	4927 bytes
SHA-256: `921a84446586fc956aca45113d0ae208fe3ad1e90779bff17296a9db6589b9a7`

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