MALICIOUS
180
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1566.001 Spearphishing Attachment
The sample is an RTF document that contains embedded OLE object data, specifically triggering critical heuristics for CVE-2017-11882 via an Equation Editor vulnerability. This exploit is known to allow for arbitrary code execution, which is likely used here to download and execute a secondary payload. The presence of the ".objupdate" directive further suggests an attempt to force OLE object activation.
Heuristics 4
-
CVE-2017-11882 — Equation Editor FONT record overflow critical CVE likely CVE_2017_11882Equation 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.
-
Equation Editor CLSID critical RTF_EQUATION_EDITOREquation Editor OLE CLSID found inside an OLE object — exploited by CVE-2017-11882 / CVE-2018-0802 / CVE-2018-0798
-
\objupdate forces OLE activation high RTF_OBJUPDATERTF 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_OBJDATARTF contains 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001dcc.bind920eab6f0fadfdb952841fb0fbf30876f0beb7c79a405570e1a802db752307e |
rtf-objdata-decoded | RTF \objdata at offset 0x1DCC | 4166 bytes |
Open this report in the interactive analyzer, or submit your own file for analysis.