Analysis
- max time kernel
149s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
11/06/2024, 09:22
General
- Target 2024-06-11_25242dbab3a8eb1fa8980f59b24265a7_cryptolocker.exe
- Size 40KB
- Sample240611-lcd7sssdrj
- SHA256 e62cc28130f2f410925b1a44c269ef72c16607bdb5876ff1a95a9f01e01e9c97
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\2024-06-11_25242dbab3a8eb1fa8980f59b24265a7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_25242dbab3a8eb1fa8980f59b24265a7_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=1416 --field-trial-handle=3240,i,13319578961094268484,16557498665191861597,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/2184-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/2184-1-0x0000000000620000-0x0000000000626000-memory.dmp
memory/2184-2-0x0000000000620000-0x0000000000626000-memory.dmp
memory/2184-3-0x0000000000650000-0x0000000000656000-memory.dmp
memory/2184-25-0x0000000000500000-0x0000000000510000-memory.dmp
memory/3808-24-0x0000000000670000-0x0000000000676000-memory.dmp
memory/3808-18-0x0000000002080000-0x0000000002086000-memory.dmp
memory/3808-26-0x0000000000500000-0x0000000000510000-memory.dmp