Analysis
- max time kernel
148s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
30/05/2024, 03:58
General
- Target 2024-05-30_7b073a7f4bcd079afeacaf4543d35dd4_cryptolocker.exe
- Size 65KB
- Sample240530-ejh11aef59
- SHA256 667aacaaa6792304ef4f54bc624367a9dde494509274139066ef7ba184c53936
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 2 IoCs
- UPX dump on OEP (original entry point) 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\2024-05-30_7b073a7f4bcd079afeacaf4543d35dd4_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-30_7b073a7f4bcd079afeacaf4543d35dd4_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=4156,i,13035806169561352434,1332896185314862791,262144 --variations-seed-version --mojo-platform-channel-handle=4124 /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/1532-20-0x0000000000730000-0x0000000000736000-memory.dmp
memory/1532-21-0x00000000020F0000-0x00000000020F6000-memory.dmp
memory/1532-27-0x0000000000500000-0x0000000000510000-memory.dmp
memory/5044-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/5044-1-0x00000000020D0000-0x00000000020D6000-memory.dmp
memory/5044-2-0x0000000002100000-0x0000000002106000-memory.dmp
memory/5044-9-0x00000000020D0000-0x00000000020D6000-memory.dmp
memory/5044-17-0x0000000000500000-0x0000000000510000-memory.dmp