Analysis
- max time kernel
143s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
13/06/2024, 03:31
General
- Target 2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe
- Size 49KB
- Sample240613-d24vrasgkd
- SHA256 439758450f01d706be42f700251f74cf7d9afa81282c6c81a734cea6e0b2f8b4
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 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
- 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\2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_3fd61b31baa1af575b0a5ad9d014cda5_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=1340 --field-trial-handle=2356,i,13261194862334667799,7441241219475888176,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/628-25-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/628-18-0x00000000005E0000-0x00000000005E6000-memory.dmp
memory/628-26-0x0000000000500000-0x000000000050B000-memory.dmp
memory/1140-0-0x0000000000500000-0x000000000050B000-memory.dmp
memory/1140-1-0x0000000002190000-0x0000000002196000-memory.dmp
memory/1140-2-0x0000000002190000-0x0000000002196000-memory.dmp
memory/1140-3-0x00000000021B0000-0x00000000021B6000-memory.dmp
memory/1140-24-0x0000000000500000-0x000000000050B000-memory.dmp