RTF malware analysis — malicious · 8aa89e4f4e298ff1

MALICIOUS

RTF

44.9 KB First seen: 2018-12-09

MD5: 25f64c0e22a7804b788ec5c4a9dfee85 SHA-1: aa90843cac543e843fe942f0c06dd4a101834271 SHA-256: 8aa89e4f4e298ff1fbf2d61fd3d7bf63aaaa981aa4b3dd106e95a625904e8107

180 Risk Score

Malware Insights

MITRE ATT&CK

T1203 Exploitation for Client Execution

The RTF document contains embedded OLE object data and triggers the CVE-2017-11882 vulnerability. This exploit is known to allow for arbitrary code execution, likely to download and run a second-stage payload.

Heuristics 4

CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882

Equation Editor MTEF contains an overlong FONT typeface field, the vulnerable copy primitive for CVE-2017-11882. This is stronger evidence than the Equation Editor CLSID alone because it identifies the malformed record that drives code execution in EQNEDT32.EXE.
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	4130 bytes
SHA-256: `ea432cc71d269b01c5bbe3cfd846d2b0f5092be9cf61a4053b3f1bc5ac27a3bd`

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