Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240802-en - resource tags
- submitted
05/09/2024, 12:25
General
- Target 2024-09-05_0bd445b6f1f0fdfa989d4580acd60115_cryptolocker.exe
- Size 68KB
- Sample240905-plxbhs1apk
- SHA256 fb9d172e5ec50ce019e5db0354292b4a167cbf22aa8456e9c35acf3fb97bfca0
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\2024-09-05_0bd445b6f1f0fdfa989d4580acd60115_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-05_0bd445b6f1f0fdfa989d4580acd60115_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/1768-20-0x00000000006C0000-0x00000000006C6000-memory.dmp
memory/1768-19-0x0000000000560000-0x0000000000566000-memory.dmp
memory/1768-26-0x0000000000500000-0x000000000050F311-memory.dmp
memory/2436-0-0x0000000000500000-0x000000000050F311-memory.dmp
memory/2436-1-0x0000000002050000-0x0000000002056000-memory.dmp
memory/2436-2-0x0000000002050000-0x0000000002056000-memory.dmp
memory/2436-3-0x0000000002110000-0x0000000002116000-memory.dmp
memory/2436-17-0x0000000000500000-0x000000000050F311-memory.dmp