Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
14/02/2024, 08:50
General
- Target 2024-02-14_e720f9a94d663d5189e62b4edbeda70b_cryptolocker.exe
- Size 98KB
- Sample240214-krmbaafc24
- SHA256 5efa5c49d989eef3eb972b6aa1552a486622abb537b1f8e11722eb433e1782de
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 IoCs
- UPX dump on OEP (original entry point) 4 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 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).
- Suspicious use of WriteProcessMemory 3 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-14_e720f9a94d663d5189e62b4edbeda70b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_e720f9a94d663d5189e62b4edbeda70b_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/1300-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/1300-1-0x00000000006E0000-0x00000000006E6000-memory.dmp
memory/1300-2-0x00000000006E0000-0x00000000006E6000-memory.dmp
memory/1300-3-0x00000000021B0000-0x00000000021B6000-memory.dmp
memory/1300-17-0x0000000000500000-0x000000000050F000-memory.dmp
memory/3888-19-0x0000000001F80000-0x0000000001F86000-memory.dmp
memory/3888-22-0x0000000000670000-0x0000000000676000-memory.dmp
memory/3888-26-0x0000000000500000-0x000000000050F000-memory.dmp