Analysis Overview
SHA256
f1b61e942e02bf9d3ba3373d34fb69a925fa4bbb25dda27286996dc71979423d
Threat Level: Known bad
The file f1b61e942e02bf9d3ba3373d34fb69a925fa4bbb25dda27286996dc71979423d was found to be: Known bad.
Malicious Activity Summary
CrimsonRAT main payload
CrimsonRat
Crimsonrat family
Office macro that triggers on suspicious action
Suspicious Office macro
Executes dropped EXE
Loads dropped DLL
Adds Run key to start application
System Location Discovery: System Language Discovery
Office loads VBA resources, possible macro or embedded object present
Suspicious use of SetWindowsHookEx
Suspicious behavior: EnumeratesProcesses
Suspicious behavior: AddClipboardFormatListener
Suspicious use of WriteProcessMemory
Enumerates system info in registry
Suspicious use of AdjustPrivilegeToken
Modifies registry class
Checks processor information in registry
MITRE ATT&CK
Enterprise Matrix V15
Analysis: static1
Detonation Overview
Reported
2024-11-25 21:10
Signatures
Office macro that triggers on suspicious action
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Suspicious Office macro
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
Analysis: behavioral1
Detonation Overview
Submitted
2024-11-25 21:10
Reported
2024-11-25 21:13
Platform
win7-20240903-en
Max time kernel
140s
Max time network
146s
Command Line
Signatures
CrimsonRAT main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
CrimsonRat
Crimsonrat family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
Loads dropped DLL
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000\Software\Microsoft\Windows\CurrentVersion\Run\wsecor = "C:\\ProgramData\\Mins\\mieces.exe" | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
Office loads VBA resources, possible macro or embedded object present
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\FloatingPointProcessor | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Modifies registry class
| Description | Indicator | Process | Target |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8BD21D12-EC42-11CE-9E0D-00AA006002F3} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{7B020EC2-AF6C-11CE-9F46-00AA00574A4F} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\TypeLib\{6E6A01D5-8B89-4F25-9E5B-29D556374FC8}\2.0\ = "Microsoft Forms 2.0 Object Library" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\TypeLib\{6E6A01D5-8B89-4F25-9E5B-29D556374FC8}\2.0\0 | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{BEF6E003-A874-101A-8BBA-00AA00300CAB}\ = "Font" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{04598FC3-866C-11CF-AB7C-00AA00C08FCF} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{79176FB3-B7F2-11CE-97EF-00AA006D2776} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D111-5CC6-11CF-8D67-00AA00BDCE1D} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\TypeLib | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8A683C90-BA84-11CF-8110-00A0C9030074}\ = "IReturnSingle" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8A683C91-BA84-11CF-8110-00A0C9030074}\ = "IReturnEffect" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{7B020EC2-AF6C-11CE-9F46-00AA00574A4F}\ = "ScrollbarEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{47FF8FE3-6198-11CF-8CE8-00AA006CB389} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6E6A01D5-8B89-4F25-9E5B-29D556374FC8}\2.0 | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{04598FC7-866C-11CF-AB7C-00AA00C08FCF} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{A38BFFC3-A5A0-11CE-8107-00AA00611080}\ = "Tab" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D115-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLReset" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{7B020EC1-AF6C-11CE-9F46-00AA00574A4F}\ = "CommandButtonEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{7B020EC7-AF6C-11CE-9F46-00AA00574A4F}\ = "TabStripEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D123-5CC6-11CF-8D67-00AA00BDCE1D} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8BD21D62-EC42-11CE-9E0D-00AA006002F3} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{79176FB2-B7F2-11CE-97EF-00AA006D2776} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D113-5CC6-11CF-8D67-00AA00BDCE1D} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{47FF8FE9-6198-11CF-8CE8-00AA006CB389} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{5512D117-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLCheckbox" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{7B020EC2-AF6C-11CE-9F46-00AA00574A4F}\ = "ScrollbarEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{47FF8FE3-6198-11CF-8CE8-00AA006CB389} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\TypeLib\{6E6A01D5-8B89-4F25-9E5B-29D556374FC8}\2.0\HELPDIR | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{8BD21D23-EC42-11CE-9E0D-00AA006002F3} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D125-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLTextArea" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{978C9E22-D4B0-11CE-BF2D-00AA003F40D0}\ = "LabelControlEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{47FF8FE2-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents3" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\TypeLib\{6E6A01D5-8B89-4F25-9E5B-29D556374FC8}\2.0\0\win32\ = "C:\\Users\\Admin\\AppData\\Local\\Temp\\VBE\\MSForms.exd" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{82B02370-B5BC-11CF-810F-00A0C9030074} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8BD21D53-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcOptionButton" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{944ACF93-A1E6-11CE-8104-00AA00611080} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{79176FB3-B7F2-11CE-97EF-00AA006D2776}\ = "ISpinbutton" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{5512D111-5CC6-11CF-8D67-00AA00BDCE1D}\ = "IWHTMLSubmitButton" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{29B86A70-F52E-11CE-9BCE-00AA00608E01} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{04598FC4-866C-11CF-AB7C-00AA00C08FCF}\ = "ICommandButton" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{8BD21D43-EC42-11CE-9E0D-00AA006002F3}\ = "IMdcCheckBox" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8BD21D53-EC42-11CE-9E0D-00AA006002F3} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D11D-5CC6-11CF-8D67-00AA00BDCE1D} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{47FF8FE9-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents10" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074}\ = "IReturnBoolean" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{9A4BBF53-4E46-101B-8BBD-00AA003E3B29} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{8BD21D13-EC42-11CE-9E0D-00AA006002F3} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{A38BFFC3-A5A0-11CE-8107-00AA00611080} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{978C9E22-D4B0-11CE-BF2D-00AA003F40D0}\ = "LabelControlEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{47FF8FE6-6198-11CF-8CE8-00AA006CB389}\ = "WHTMLControlEvents7" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{8BD21D42-EC42-11CE-9E0D-00AA006002F3} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{04598FC9-866C-11CF-AB7C-00AA00C08FCF} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{EC72F590-F375-11CE-B9E8-00AA006B1A69}\ = "IDataAutoWrapper" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074}\ = "IReturnBoolean" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{944ACF93-A1E6-11CE-8104-00AA00611080}\ = "Tabs" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Set value (str) | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{8BD21D62-EC42-11CE-9E0D-00AA006002F3}\ = "MdcToggleButtonEvents" | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5CEF5613-713D-11CE-80C9-00AA00611080} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\MACHINE\SOFTWARE\Classes\TypeLib\{6E6A01D5-8B89-4F25-9E5B-29D556374FC8} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{82B02371-B5BC-11CF-810F-00A0C9030074} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{5512D11D-5CC6-11CF-8D67-00AA00BDCE1D} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Wow6432Node\Interface\{5512D11F-5CC6-11CF-8D67-00AA00BDCE1D} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| Key created | \REGISTRY\USER\S-1-5-21-1488793075-819845221-1497111674-1000_CLASSES\Interface\{47FF8FE0-6198-11CF-8CE8-00AA006CB389} | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe | N/A |
Suspicious use of SetWindowsHookEx
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
| N/A | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | N/A |
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 2452 wrote to memory of 2656 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe |
| PID 2452 wrote to memory of 2656 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe |
| PID 2452 wrote to memory of 2656 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe |
| PID 2452 wrote to memory of 2656 | N/A | C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\Nxh5t9.exe |
Processes
C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE
"C:\Program Files (x86)\Microsoft Office\Office14\EXCEL.EXE" /dde C:\Users\Admin\AppData\Local\Temp\f1b61e942e02bf9d3ba3373d34fb69a925fa4bbb25dda27286996dc71979423d.xls
C:\Users\Admin\AppData\Roaming\Nxh5t9.exe
C:\Users\Admin\AppData\Roaming\Nxh5t9.exe
Network
| Country | Destination | Domain | Proto |
| DE | 79.143.181.178:8861 | tcp | |
| DE | 79.143.181.178:8861 | tcp | |
| DE | 79.143.181.178:8861 | tcp | |
| DE | 79.143.181.178:8861 | tcp |
Files
memory/2452-0-0x000000005FFF0000-0x0000000060000000-memory.dmp
memory/2452-1-0x000000007207D000-0x0000000072088000-memory.dmp
memory/2452-4-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-10-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-19-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-25-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-30-0x0000000006490000-0x0000000006590000-memory.dmp
\Users\Admin\AppData\Roaming\Nxh5t9.exe
| MD5 | 939c65b870c71b3a865b5bdd0476eb84 |
| SHA1 | 4163c99b888a378be1d2c6fa45d20ce042d00252 |
| SHA256 | 842699b57bef204fbe629835c0e6b3bbfd3093755ff9fe558bb6295f87d7cadb |
| SHA512 | be86ed892c5cf4bf670708f018fc3d49cff1d84f6b7d2a31d9351b3e440e2d5de4dda8a1991efc2b07ac41cc2fb145e4c94c7c27bb98fbfa9d823d558e6b6d6c |
memory/2656-36-0x000000006BF31000-0x000000006BF32000-memory.dmp
memory/2656-37-0x000000006BF30000-0x000000006C4DB000-memory.dmp
memory/2452-38-0x000000007207D000-0x0000000072088000-memory.dmp
memory/2656-39-0x000000006BF30000-0x000000006C4DB000-memory.dmp
memory/2452-41-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-42-0x0000000006840000-0x0000000006940000-memory.dmp
memory/2452-43-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-44-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2452-45-0x0000000006490000-0x0000000006590000-memory.dmp
memory/2656-46-0x000000006BF30000-0x000000006C4DB000-memory.dmp
Analysis: behavioral2
Detonation Overview
Submitted
2024-11-25 21:10
Reported
2024-11-25 21:13
Platform
win10v2004-20241007-en
Max time kernel
142s
Max time network
150s
Command Line
Signatures
CrimsonRAT main payload
| Description | Indicator | Process | Target |
| N/A | N/A | N/A | N/A |
CrimsonRat
Crimsonrat family
Executes dropped EXE
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
Adds Run key to start application
| Description | Indicator | Process | Target |
| Set value (str) | \REGISTRY\USER\S-1-5-21-3756129449-3121373848-4276368241-1000\SOFTWARE\Microsoft\Windows\CurrentVersion\Run\wsecor = "C:\\ProgramData\\Mins\\mieces.exe" | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
System Location Discovery: System Language Discovery
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
Checks processor information in registry
| Description | Indicator | Process | Target |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\CentralProcessor\0 | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\~MHz | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\CentralProcessor\0\ProcessorNameString | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Enumerates system info in registry
| Description | Indicator | Process | Target |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemFamily | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key value queried | \REGISTRY\MACHINE\HARDWARE\DESCRIPTION\System\BIOS\SystemSKU | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
| Key opened | \REGISTRY\MACHINE\Hardware\Description\System\BIOS | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious behavior: AddClipboardFormatListener
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | N/A |
Suspicious behavior: EnumeratesProcesses
| Description | Indicator | Process | Target |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
| N/A | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
Suspicious use of AdjustPrivilegeToken
| Description | Indicator | Process | Target |
| Token: SeDebugPrivilege | N/A | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe | N/A |
Suspicious use of SetWindowsHookEx
Suspicious use of WriteProcessMemory
| Description | Indicator | Process | Target |
| PID 552 wrote to memory of 3752 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe |
| PID 552 wrote to memory of 3752 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe |
| PID 552 wrote to memory of 3752 | N/A | C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE | C:\Users\Admin\AppData\Roaming\oZh0Ig.exe |
Processes
C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE
"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\f1b61e942e02bf9d3ba3373d34fb69a925fa4bbb25dda27286996dc71979423d.xls"
C:\Users\Admin\AppData\Roaming\oZh0Ig.exe
C:\Users\Admin\AppData\Roaming\oZh0Ig.exe
Network
| Country | Destination | Domain | Proto |
| US | 8.8.8.8:53 | roaming.officeapps.live.com | udp |
| IE | 52.109.76.243:443 | roaming.officeapps.live.com | tcp |
| US | 8.8.8.8:53 | 97.32.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.219.191.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 243.76.109.52.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 83.210.23.2.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 76.32.126.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 200.79.70.13.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 228.249.119.40.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 197.87.175.4.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 171.39.242.20.in-addr.arpa | udp |
| US | 8.8.8.8:53 | 104.208.201.84.in-addr.arpa | udp |
| DE | 79.143.181.178:8861 | tcp | |
| US | 8.8.8.8:53 | 23.236.111.52.in-addr.arpa | udp |
| DE | 79.143.181.178:8861 | tcp | |
| DE | 79.143.181.178:8861 | tcp | |
| DE | 79.143.181.178:8861 | tcp |
Files
memory/552-1-0x00007FFCF728D000-0x00007FFCF728E000-memory.dmp
memory/552-2-0x00007FFCB7270000-0x00007FFCB7280000-memory.dmp
memory/552-4-0x00007FFCB7270000-0x00007FFCB7280000-memory.dmp
memory/552-0-0x00007FFCB7270000-0x00007FFCB7280000-memory.dmp
memory/552-3-0x00007FFCB7270000-0x00007FFCB7280000-memory.dmp
memory/552-5-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-6-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-7-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-9-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-13-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-12-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-14-0x00007FFCB4910000-0x00007FFCB4920000-memory.dmp
memory/552-11-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-15-0x00007FFCB4910000-0x00007FFCB4920000-memory.dmp
memory/552-10-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-17-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-16-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-8-0x00007FFCB7270000-0x00007FFCB7280000-memory.dmp
memory/552-22-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-23-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-40-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-52-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-53-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
C:\Users\Admin\AppData\Roaming\oZh0Ig.exe
| MD5 | 939c65b870c71b3a865b5bdd0476eb84 |
| SHA1 | 4163c99b888a378be1d2c6fa45d20ce042d00252 |
| SHA256 | 842699b57bef204fbe629835c0e6b3bbfd3093755ff9fe558bb6295f87d7cadb |
| SHA512 | be86ed892c5cf4bf670708f018fc3d49cff1d84f6b7d2a31d9351b3e440e2d5de4dda8a1991efc2b07ac41cc2fb145e4c94c7c27bb98fbfa9d823d558e6b6d6c |
memory/552-56-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-61-0x00007FFCF728D000-0x00007FFCF728E000-memory.dmp
memory/552-62-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/3752-60-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/3752-64-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-65-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-66-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-67-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-68-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
memory/552-72-0x00007FFCF71F0000-0x00007FFCF73E5000-memory.dmp
C:\Users\Admin\AppData\Roaming\Microsoft\Windows\Recent\CustomDestinations\b8ab77100df80ab2.customDestinations-ms
| MD5 | 43c60f2fd83fb333bfc67427196eab16 |
| SHA1 | 611091196170d0ed9ec0ce066225cd4d7aead3f4 |
| SHA256 | c8b885a09e1863aa69017425776e019dfe0495d556c5651c35a8dafc04a3e4b6 |
| SHA512 | 9e6a415eca55b5184ace4a0311a97ad4459e577597bd3262861aa3dc00c7b8363b745b73613263da50e6ea573b7081c381b7f43edce4841b1508d29f3e2b3998 |