Analysis
- max time kernel
145s - max time network
163s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
20/04/2024, 17:08
General
- Target 2024-04-20_ef98b73dcc18dfbc2a87d4f1570c6ed0_cryptolocker.exe
- Size 61KB
- Sample240420-vnmsradc84
- SHA256 1876a0cf177ace6af8045863b7c02e1fee9d660b0f6de30e7c514dbbf0d444e7
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 IoCs
- Detects executables built or packed with MPress PE compressor 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\2024-04-20_ef98b73dcc18dfbc2a87d4f1570c6ed0_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-20_ef98b73dcc18dfbc2a87d4f1570c6ed0_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.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=4136 --field-trial-handle=2692,i,8678872182442199182,12502579059484928042,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
misid.exe
memory/1496-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/1496-1-0x0000000002210000-0x0000000002216000-memory.dmp
memory/1496-2-0x0000000002210000-0x0000000002216000-memory.dmp
memory/1496-3-0x0000000002230000-0x0000000002236000-memory.dmp
memory/1496-10-0x0000000000500000-0x0000000000510000-memory.dmp
memory/4504-19-0x0000000000660000-0x0000000000666000-memory.dmp
memory/4504-20-0x00000000006D0000-0x00000000006D6000-memory.dmp
memory/4504-26-0x0000000000500000-0x0000000000510000-memory.dmp