Analysis
- max time kernel
151s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
06/06/2024, 21:39
General
- Target 2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe
- Size 45KB
- Sample240606-1hykyscd2v
- SHA256 b75d5910b1f48d41bed8a29967091c7bb97c3dfbe4d8c4e14b5a78308d53ee97
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 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\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-06_f1432583ed741649cb501945b93bdcdc_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.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=3684 --field-trial-handle=2656,i,16940681401824032220,151921362336696246,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
rewok.exe
memory/3996-25-0x0000000002210000-0x0000000002216000-memory.dmp
memory/5064-0-0x0000000000730000-0x0000000000736000-memory.dmp
memory/5064-1-0x0000000000730000-0x0000000000736000-memory.dmp
memory/5064-2-0x0000000000400000-0x0000000000406000-memory.dmp