MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1203 .NET/Nim/Other Language Interpreters
T1204 User Execution
The presence of multiple indicators related to exploitation ofMicrosoft Equation editor within this RTF file strongly suggests its involvementin attacks leveraging these known CVEs.Critical heuristics specifically flaggedthe manipulation of Equation Editor'sProgIDs alongside suspiciousOLEobject handling behaviors which alignwith established patterns observed across pastexfiltration campaigns involving similar vectors.
Heuristics 3
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Split hex Equation Editor ProgID + OLE object critical RTF_EQUATION_EDITORRTF embeds the Equation.3 ProgID as hex bytes near OLE object activation and splits the byte stream with whitespace or an ignorable RTF group. This is an Equation Editor OLE activation surface commonly used by CVE-2017-11882 / CVE-2018-0802 exploit documents.
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\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.
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OLE object data medium RTF_OBJDATARTF 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_off0000003d.bincd43149584e51aeed45b3acd4fb27ef63bf145571094101406a3900ca8522463 |
rtf-objdata-decoded | RTF \objdata at offset 0x3D | 1375 bytes |
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