Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
03/06/2024, 15:24
General
- Target 2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker.exe
- Size 39KB
- Sample240603-stdqxsag3w
- SHA256 7e5382985026cae1f1810069f1e0788b4e4901b9c634e356e3fdd3e5c028694b
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\2024-06-03_1562376d05e383df02e229f9e6a4611b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_1562376d05e383df02e229f9e6a4611b_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=3944 --field-trial-handle=2280,i,11703952675008463361,17436195144517971517,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
Loading Replay Monitor...
Downloads
rewok.exe
memory/824-0-0x0000000002350000-0x0000000002356000-memory.dmp
memory/824-1-0x0000000002350000-0x0000000002356000-memory.dmp
memory/824-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/3264-19-0x0000000002210000-0x0000000002216000-memory.dmp