Analysis
- max time kernel
141s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
07/06/2024, 15:24
General
- Target 2024-06-07_2d55460cec8729c3fd163f446ce04df1_cryptolocker.exe
- Size 54KB
- Sample240607-sth1msbd44
- SHA256 3042f4a5b6eefde73becc51a8d53d4fe1febb73ee7d645527e8c7b3c86bbde69
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\2024-06-07_2d55460cec8729c3fd163f446ce04df1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-07_2d55460cec8729c3fd163f446ce04df1_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
-
-
C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe"C:\Program Files (x86)\Microsoft\Edge\Application\msedge.exe" --type=utility --utility-sub-type=asset_store.mojom.AssetStoreService --lang=en-US --service-sandbox-type=asset_store_service --no-appcompat-clear --mojo-platform-channel-handle=4104 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/1804-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1804-1-0x0000000000620000-0x0000000000626000-memory.dmp
memory/1804-2-0x0000000000620000-0x0000000000626000-memory.dmp
memory/1804-3-0x0000000000650000-0x0000000000656000-memory.dmp
memory/1804-25-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3996-18-0x0000000000730000-0x0000000000736000-memory.dmp
memory/3996-19-0x0000000000750000-0x0000000000756000-memory.dmp
memory/3996-26-0x0000000000500000-0x0000000000510000-memory.dmp