MALICIOUS
140
Risk Score
Malware Insights
MITRE ATT&CK
T1204 Malicious Link
T1204.002 Malicious Link: Malicious File
T1566 Phishing
T1566.001 Phishing: Spearphishing Attachment
T1059.005 Command and Scripting Interpreter: Visual Basic
The file is an RTF document containing an embedded OLE object, specifically exploiting the Equation Editor vulnerability (RTF_EQUATION_EDITOR). The document body provides a lure about financial auditing, instructing the user to 'click Enable editing', which is a common tactic to bypass security measures. The presence of ".objdata" and ".objupdate" sections further indicates the exploitation of OLE object handling within RTF to trigger malicious code execution, likely a downloader.
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_off00002c2d.bin4b25a2b5af8f437bbb0abb1dd01fa1d5112d9820dee64c0bff21ae7dc9d67fe5 |
rtf-objdata-decoded | RTF \objdata at offset 0x2C2D | 1647 bytes |
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