MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution
T1204.002 User Execution: Malicious File
T1059 Command and Scripting Interpreter
T1059.005 Command and Scripting Interpreter: Visual Basic
The sample is an RTF document that contains OLE object data and specifically triggers heuristics related to the Equation Editor vulnerability. The document body includes a lure instructing the user to 'click Enable editing', which is a common tactic for macro-based malware. The presence of RTF_EQUATION_EDITOR and RTF_OBJUPDATE strongly suggests exploitation of a known Equation Editor vulnerability to execute arbitrary code, likely to download and run a second-stage payload.
Heuristics 5
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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
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Embedded OLE object medium RTF_OBJEMBRTF contains \objemb — embedded OLE object
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Macro/content-enable lure medium SE_ENABLE_LUREDocument instructs the user to enable macros or editing — a common technique used by malware droppers to bypass Office macro security settings
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00002e2e.binb773448085e52681c7d36b2e12e43dd2c921d541c59d51fac2c95569c921060d |
rtf-objdata-decoded | RTF \objdata at offset 0x2E2E | 1432 bytes |
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