Analysis
- max time kernel
149s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240412-en - resource tags
- submitted
20/04/2024, 03:25
General
- Target 2024-04-20_0882fc70e3e597ec10ac16955d65eeb9_cryptolocker.exe
- Size 93KB
- Sample240420-dyx8ssga3s
- SHA256 954a5abdffbb11f0fa42390028c8d917253320cd3ea386dc865b6e785db44107
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\2024-04-20_0882fc70e3e597ec10ac16955d65eeb9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-20_0882fc70e3e597ec10ac16955d65eeb9_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
misid.exe
memory/2500-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2500-1-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2500-2-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/2500-3-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/2500-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3556-19-0x0000000002100000-0x0000000002106000-memory.dmp
memory/3556-21-0x0000000000730000-0x0000000000736000-memory.dmp
memory/3556-26-0x0000000000500000-0x0000000000510000-memory.dmp