RTF malware analysis — malicious · f87112afec4ecb8d

MALICIOUS

RTF

44.8 KB First seen: 2018-11-20

MD5: 4680b57db72bd11bc0ea6fa21ad76a96 SHA-1: ac46e844478e3a989e008f334297c3e2e3b632cd SHA-256: f87112afec4ecb8dbeae5f24f91a8cee99f65f6a8a644c118d1906a6667dc82d

120 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF file contains OLE object data and an \objupdate directive, strongly indicating an attempt to exploit embedded objects. ClamAV specifically detects this as Doc.Exploit.CVE_2017_11882-6934206-0, confirming the exploitation of the Equation Editor vulnerability. This technique allows for arbitrary code execution on the victim's machine.

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_off0000003c.bin`	rtf-objdata-decoded	RTF \objdata at offset 0x3C	4151 bytes
SHA-256: `d53e4987f0827bc1a413c7f96aebac278c62c6519847dbc8648558d4261ca83b`

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