Analysis
- max time kernel
148s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
25/08/2024, 07:06
General
- Target 2024-08-25_f37d805d33d999c8588ff5c97bbdf092_cryptolocker.exe
- Size 92KB
- Sample240825-hxa44atalm
- SHA256 526c235f518a91f70df77d75b53987cdb5dc82dc3afd5e7c52531eb0b118cce2
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\2024-08-25_f37d805d33d999c8588ff5c97bbdf092_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-08-25_f37d805d33d999c8588ff5c97bbdf092_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/1744-19-0x0000000002060000-0x0000000002066000-memory.dmp
memory/1744-25-0x0000000000550000-0x0000000000556000-memory.dmp
memory/1744-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2672-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2672-1-0x0000000000510000-0x0000000000516000-memory.dmp
memory/2672-2-0x0000000000510000-0x0000000000516000-memory.dmp
memory/2672-3-0x0000000000530000-0x0000000000536000-memory.dmp
memory/2672-17-0x0000000000500000-0x0000000000510000-memory.dmp