MALICIOUS
120
Risk Score
Malware Insights
MITRE ATT&CK
T1203 Exploitation for Client Execution
T1059.001 PowerShell
T1105 Ingress Tool Transfer
The sample is an RTF document that contains embedded OLE objects, specifically targeting the Equation Editor vulnerability (RTF_EQUATION_EDITOR). The RTF_OBJUPDATE heuristic indicates that the OLE object is automatically activated upon opening, leading to exploitation. While no scripts were explicitly extracted, the nature of the exploit suggests it is designed to download and execute a second-stage payload. The SHA256 hash is provided as a primary IOC.
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 2 \objdata section(s) — embedded OLE objects
Extracted artifacts 1
Files carved from inside the sample during analysis.
| Filename | Kind | Source | Size |
|---|---|---|---|
objdata_00_off00001653.bin6241e558b0d7d219be0d53dc2aa9aacd39cb2493a6ac7295be8cf92ee5b0079a |
rtf-objdata-decoded | RTF \objdata at offset 0x1653 | 2107 bytes |
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