Analysis
- max time kernel
148s - max time network
154s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
13/06/2024, 01:38
General
- Target 2024-06-13_974800e8910f2b30c5d57014b12920b3_cryptolocker.exe
- Size 64KB
- Sample240613-b2ke1azbmd
- SHA256 9bae420ef47fb95080faf1a3b8cd382ecec5cabf3f5e53dff979217b6ab6fba5
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\2024-06-13_974800e8910f2b30c5d57014b12920b3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_974800e8910f2b30c5d57014b12920b3_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/3100-0-0x0000000000500000-0x000000000050F311-memory.dmp
memory/3100-1-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/3100-3-0x00000000005D0000-0x00000000005D6000-memory.dmp
memory/3100-9-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/3100-17-0x0000000000500000-0x000000000050F311-memory.dmp
memory/4760-19-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/4760-20-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/4760-26-0x0000000000500000-0x000000000050F311-memory.dmp