Analysis
- max time kernel
144s - max time network
147s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
04/02/2024, 00:43
General
- Target 2024-02-04_8a8842f0dd6bbeb5cc5955466f06912a_cryptolocker.exe
- Size 82KB
- Sample240204-a22tlsfhej
- SHA256 93bce1926a492eca9701a7e2de5bfcbb9e92058ced6bbeaca793b50eaf2dcd54
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 2 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\2024-02-04_8a8842f0dd6bbeb5cc5955466f06912a_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-04_8a8842f0dd6bbeb5cc5955466f06912a_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⤵
- Checks computer location settings
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
misid.exe
memory/3576-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3576-1-0x0000000000870000-0x0000000000876000-memory.dmp
memory/3576-2-0x0000000000870000-0x0000000000876000-memory.dmp
memory/3576-3-0x0000000000890000-0x0000000000896000-memory.dmp
memory/3576-17-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3596-19-0x0000000000660000-0x0000000000666000-memory.dmp
memory/3596-22-0x0000000000640000-0x0000000000646000-memory.dmp
memory/3596-54-0x0000000000500000-0x0000000000510000-memory.dmp