MALICIOUS
160
Risk Score
Malware Insights
MITRE ATT&CK
T1204 User Execution
T1204.002 Malicious File
T1566 Phishing
T1566.001 Spearphishing Attachment
The sample is an RTF document that leverages OLE object embedding and specifically targets the Equation Editor vulnerability. The document body contains text designed to appear legitimate, discussing financial audits, and includes a lure to 'enable editing'. The presence of RTF_OBJUPDATE and SE_ENABLE_LURE heuristics indicates the document is designed to trick the user into activating embedded malicious content, likely an OLE object, to exploit vulnerabilities.
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_off00009066.bind4cd357ac9fbfe9e717241fe18d098842afd67e8fb2883c68c2a4cf0ac67a774 |
rtf-objdata-decoded | RTF \objdata at offset 0x9066 | 1539 bytes |
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