Analysis
- max time kernel
900s - max time network
631s - platform
windows10-ltsc_2021_x64 - resource
win10ltsc2021-20260513-en - resource tags
- submitted
09/08/2026, 00:45
General
- Target ConcreteAbyss/ConcreteAbyss.exe
- Size 150KB
- Sample260809-a32v1afn4w
- SHA256 f1dfc668d7243071953d9e43ef45a4ecbd7bdb9a0f48f59c438a0621026e79f8
Score
7/10
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Loads dropped DLL 1 IoCs
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
- Suspicious use of WriteProcessMemory 2 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\ConcreteAbyss\ConcreteAbyss.exe"C:\Users\Admin\AppData\Local\Temp\ConcreteAbyss\ConcreteAbyss.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ConcreteAbyss\Engine\Extras\Redist\en-us\UEPrereqSetup_x64.exe"C:\Users\Admin\AppData\Local\Temp\ConcreteAbyss\Engine\Extras\Redist\en-us\UEPrereqSetup_x64.exe"2⤵
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\ConcreteAbyss\Engine\Extras\Redist\en-us\UEPrereqSetup_x64.exe"C:\Users\Admin\AppData\Local\Temp\ConcreteAbyss\Engine\Extras\Redist\en-us\UEPrereqSetup_x64.exe" -burn.unelevated BurnPipe.{51FA740D-C458-4C5D-AC4A-E3EF9A065A93} {7079EC3A-7AC9-4AD8-954A-C20D1CA3F47B} 48323⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
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Network
MITRE ATT&CK Enterprise v16
Replay Monitor
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Downloads
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wixstdba.dll