Analysis
- max time kernel
150s - max time network
157s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
13/06/2024, 01:31
General
- Target 2024-06-13_4bd9ae10b26e240f39c674116b0ebcc3_cryptolocker.exe
- Size 60KB
- Sample240613-bxwbpsshll
- SHA256 46c253c0edf471b48b7bb9d357e35773626db627aa64254c396df398c1d52430
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 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_4bd9ae10b26e240f39c674116b0ebcc3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_4bd9ae10b26e240f39c674116b0ebcc3_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/788-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/788-1-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/788-2-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/788-3-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/788-19-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3236-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3236-20-0x0000000001F80000-0x0000000001F86000-memory.dmp
memory/3236-26-0x0000000000490000-0x0000000000496000-memory.dmp
memory/3236-27-0x0000000000500000-0x0000000000510000-memory.dmp