Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
03/06/2024, 10:27
General
- Target 2024-06-03_38fb45dae9a795c234cd1dcb251dbe93_cryptolocker.exe
- Size 42KB
- Sample240603-mg764sbc5v
- SHA256 9f3625aae70bc07e1922dcab6bf7eab79805e8279a1539ff70cebf01a73abbab
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 3 IoCs
- Detection of Cryptolocker Samples 3 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\2024-06-03_38fb45dae9a795c234cd1dcb251dbe93_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_38fb45dae9a795c234cd1dcb251dbe93_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 --field-trial-handle=3980,i,13281073920029625837,8253721632651544158,262144 --variations-seed-version --mojo-platform-channel-handle=4176 /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/1128-19-0x0000000000660000-0x0000000000666000-memory.dmp
memory/1128-25-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/2352-0-0x0000000000500000-0x000000000050B000-memory.dmp
memory/2352-1-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/2352-2-0x00000000005D0000-0x00000000005D6000-memory.dmp
memory/2352-9-0x00000000005B0000-0x00000000005B6000-memory.dmp
memory/2352-17-0x0000000000500000-0x000000000050B000-memory.dmp