Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240611-en - resource tags
- submitted
13/06/2024, 03:50
General
- Target 2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe
- Size 39KB
- Sample240613-edz3bstbrb
- SHA256 63b1b4cb66067ff8907e6e73b96bae07f42362cd9664763bfd044b734ef86b19
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\2024-06-13_c9c336bd1af4a2c030227174adc3231b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_c9c336bd1af4a2c030227174adc3231b_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 --field-trial-handle=4136,i,3671441404766730751,12082497324212183132,262144 --variations-seed-version --mojo-platform-channel-handle=4124 /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
rewok.exe
memory/1016-0-0x0000000002250000-0x0000000002256000-memory.dmp
memory/1016-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1016-8-0x0000000002250000-0x0000000002256000-memory.dmp
memory/2380-25-0x0000000002160000-0x0000000002166000-memory.dmp