Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
13/06/2024, 03:50
General
- Target 2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker.exe
- Size 25KB
- Sample240613-eed69axarj
- SHA256 0691ae9be7b5052c7e8b48662f99712b5ec5b9603e072ad03de98b0a87251b8a
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- 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 5 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).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_d249eefcfc12cd75d04704a5b7549d15_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\hasfj.exe"C:\Users\Admin\AppData\Local\Temp\hasfj.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
hasfj.exe
memory/1572-19-0x0000000008000000-0x000000000800E000-memory.dmp
memory/1572-21-0x0000000003010000-0x0000000003016000-memory.dmp
memory/1572-27-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/1572-28-0x0000000008000000-0x000000000800E000-memory.dmp
memory/3692-0-0x0000000008000000-0x000000000800E000-memory.dmp
memory/3692-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/3692-2-0x0000000003150000-0x0000000003156000-memory.dmp
memory/3692-9-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/3692-18-0x0000000008000000-0x000000000800E000-memory.dmp