Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
19/09/2024, 04:30
General
- Target 2024-09-19_7fded11a4c5e78377d318349f0c16468_cryptolocker.exe
- Size 96KB
- Sample240919-e4tcga1cpc
- SHA256 5373e50a431f7888d56d873a4e318b4df243cb8892682afa34de87733fcd77eb
Malware Config
Signatures
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-09-19_7fded11a4c5e78377d318349f0c16468_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-19_7fded11a4c5e78377d318349f0c16468_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/2668-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/2668-1-0x00000000004C0000-0x00000000004C6000-memory.dmp
memory/2668-2-0x00000000004C0000-0x00000000004C6000-memory.dmp
memory/2668-3-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/2668-17-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3960-19-0x0000000000650000-0x0000000000656000-memory.dmp
memory/3960-20-0x0000000000680000-0x0000000000686000-memory.dmp
memory/3960-26-0x0000000000500000-0x000000000050F000-memory.dmp