Analysis
- max time kernel
149s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
30/05/2024, 04:09
General
- Target 2024-05-30_9c3cea38f8d758685adf2f4311b11db0_cryptolocker.exe
- Size 91KB
- Sample240530-eq3c8afa25
- SHA256 f87e0cbdd4d06a2676160fa89f60dd6ca315111a4842f990fccae5996d640900
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\2024-05-30_9c3cea38f8d758685adf2f4311b11db0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-30_9c3cea38f8d758685adf2f4311b11db0_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/2492-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2492-1-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2492-2-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2492-4-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/2492-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3956-19-0x00000000005E0000-0x00000000005E6000-memory.dmp
memory/3956-25-0x0000000000570000-0x0000000000576000-memory.dmp
memory/3956-26-0x0000000000500000-0x0000000000510000-memory.dmp