Analysis
- max time kernel
149s - max time network
140s - platform
windows11-ltsc_2024_x64 - resource
win11ltsc2024-20260709-en - resource tags
- submitted
20/08/2026, 15:22
General
- Target YLbNeWYWJd0Z.exe
- Size 14.8MB
- Sample260820-srynbatsbv
- SHA256 b5a803f063eb4aa873fa3aa6babffd27d61ec19c653e3d702f21eaa0436dd33e
Malware Config
Signatures
- Identifies VirtualBox via ACPI registry values (likely anti-VM) 2 TTPs 2 IoCs
- Checks BIOS information in registry 2 TTPs 4 IoCs
BIOS information is often read in order to detect sandboxing environments.
- Deletes itself 1 IoCs
- Executes dropped EXE 2 IoCs
- Checks installed software on the system 1 TTPs
Looks up Uninstall key entries in the registry to enumerate software on the system.
- Checks whether UAC is enabled 1 TTPs 2 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 1 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of AdjustPrivilegeToken 2 IoCs
- Suspicious use of SetWindowsHookEx 2 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
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C:\Users\Admin\AppData\Local\Temp\YLbNeWYWJd0Z.exe"C:\Users\Admin\AppData\Local\Temp\YLbNeWYWJd0Z.exe"1⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\SysWOW64\cmd.exe"2⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\SysWOW64\cmd.exe"2⤵
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Local\ldrupd.bin"C:\Users\Admin\AppData\Local\ldrupd.bin"2⤵
- Deletes itself
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\YLbNeWYWJd0Z.exe"C:\Users\Admin\AppData\Local\Temp\YLbNeWYWJd0Z.exe"3⤵
- Identifies VirtualBox via ACPI registry values (likely anti-VM)
- Checks BIOS information in registry
- Executes dropped EXE
- Checks whether UAC is enabled
- Suspicious use of AdjustPrivilegeToken
- Suspicious use of SetWindowsHookEx
- Suspicious use of WriteProcessMemory
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\SysWOW64\cmd.exe"4⤵
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C:\Windows\SysWOW64\cmd.exe"C:\Windows\SysWOW64\cmd.exe"4⤵
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
YLbNeWYWJd0Z.exe
ldrupd.bin
memory/3084-1284-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-743-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-1474-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-1473-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-1471-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-1303-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-1281-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-1282-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-1285-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-744-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-1283-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-1286-0x0000000002130000-0x0000000002131000-memory.dmp
memory/3084-1280-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-1276-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-1274-0x0000000004800000-0x000000000579E000-memory.dmp
memory/3084-748-0x00000000020A0000-0x00000000020A1000-memory.dmp
memory/3084-747-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-745-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3084-746-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-539-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-2-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-3-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-734-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-1-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-729-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-545-0x0000000002A40000-0x0000000002A41000-memory.dmp
memory/3112-542-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-544-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-541-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-543-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-0-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-540-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-538-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-534-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-532-0x00000000046E0000-0x000000000567E000-memory.dmp
memory/3112-6-0x0000000002430000-0x0000000002431000-memory.dmp
memory/3112-5-0x0000000140000000-0x000000014245D000-memory.dmp
memory/3112-4-0x0000000140000000-0x000000014245D000-memory.dmp