Analysis
- max time kernel
16s - platform
windows11-21h2_x64 - resource
win11-20260130-en - resource tags
- submitted
20/04/2026, 16:03
Errors
General
- Target PEEKABOO.exe
- Size 921KB
- Sample260420-thbmvsby3x
- SHA256 c1aeab35f61f12db28274d82713bff400b808625854a18e49504022f92805e31
Malware Config
Signatures
- Disables Task Manager via registry modification
- Executes dropped EXE 6 IoCs
- Writes to the Master Boot Record (MBR) 1 TTPs 1 IoCs
Bootkits write to the MBR to gain persistence at a level below the operating system.
- Drops file in System32 directory 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 4 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 3 IoCs
- Suspicious use of WriteProcessMemory 6 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\PEEKABOO.exe"C:\Users\Admin\AppData\Local\Temp\PEEKABOO.exe"1⤵
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\MBR2.exe"C:\Users\Admin\AppData\Local\Temp\MBR2.exe"2⤵
- Executes dropped EXE
- Drops file in System32 directory
- Suspicious use of WriteProcessMemory
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C:\Windows\System32\MatrixMBR.exe"C:\Windows\System32\MatrixMBR.exe"3⤵
- Executes dropped EXE
- Suspicious use of WriteProcessMemory
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C:\Users\Admin\AppData\Local\Temp\GDI.exe"C:\Users\Admin\AppData\Local\Temp\GDI.exe"4⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Users\Admin\AppData\Local\Temp\MBR.exe"C:\Users\Admin\AppData\Local\Temp\MBR.exe"4⤵
- Executes dropped EXE
- Writes to the Master Boot Record (MBR)
- System Location Discovery: System Language Discovery
- Suspicious use of AdjustPrivilegeToken
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C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"C:\Users\Admin\AppData\Local\Temp\TROLL5.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
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C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"C:\Users\Admin\AppData\Local\Temp\TROLL2.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
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C:\Windows\system32\AUDIODG.EXEC:\Windows\system32\AUDIODG.EXE 0x00000000000004E8 0x00000000000004EC1⤵
- Suspicious use of AdjustPrivilegeToken
Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
GDI.exe
MBR.exe
MBR2.exe
TROLL2.exe
TROLL5.exe
MatrixMBR.exe
memory/1072-60-0x0000000000400000-0x000000000041D000-memory.dmp
memory/1076-41-0x0000000005CB0000-0x0000000006256000-memory.dmp
memory/1076-42-0x00000000057A0000-0x0000000005832000-memory.dmp
memory/1076-43-0x0000000005710000-0x000000000571A000-memory.dmp
memory/1076-40-0x0000000000BA0000-0x0000000000C58000-memory.dmp
memory/2236-81-0x0000000000530000-0x0000000000538000-memory.dmp
memory/2464-2-0x000000001B4D0000-0x000000001B5B4000-memory.dmp
memory/2464-38-0x000000001B050000-0x000000001B1EA000-memory.dmp
memory/2464-0-0x0000000000490000-0x000000000057C000-memory.dmp
memory/2464-39-0x0000000000DA0000-0x0000000000DAC000-memory.dmp
memory/2464-1-0x000000001B3C0000-0x000000001B3D0000-memory.dmp
memory/4496-58-0x0000000002B20000-0x0000000002B2C000-memory.dmp
memory/4496-32-0x0000000000B20000-0x0000000000B5A000-memory.dmp
memory/4496-57-0x000000001B630000-0x000000001B7CA000-memory.dmp
memory/5200-59-0x0000000000AE0000-0x0000000000B26000-memory.dmp
memory/5200-83-0x00000000014E0000-0x00000000014EC000-memory.dmp
memory/5200-82-0x000000001B6B0000-0x000000001B84A000-memory.dmp