MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1059 Command and Scripting Interpreter
T1566 Phishing
The sample is an RTF document that contains an embedded OLE object, specifically targeting the Equation Editor vulnerability. The \objupdate directive indicates that the embedded object will be activated automatically upon opening, bypassing user interaction. The heuristic SE_ENABLE_LURE suggests the document also contains text prompting the user to enable editing or macros, a common social engineering tactic to facilitate exploitation. The primary goal appears to be the execution of arbitrary code via the Equation Editor exploit, likely to download and run a secondary payload.
Heuristics 4
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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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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_off00005275.bind832a9f8b48176435ddbb94a8301e09a342b256f3932e2138f0ce5037222c4e6 |
rtf-objdata-decoded | RTF \objdata at offset 0x5275 | 1372 bytes |
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