Analysis
- max time kernel
149s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
02/06/2024, 23:13
General
- Target 2024-06-02_88e737bdf2ccfdcf8ae2d7a8e1f4677c_cryptolocker.exe
- Size 51KB
- Sample240602-27p6jsae9v
- SHA256 a033fa0516a53ce0f57b51571232017889f5a16cfc9f201e7173aa05c8e60388
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\2024-06-02_88e737bdf2ccfdcf8ae2d7a8e1f4677c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-02_88e737bdf2ccfdcf8ae2d7a8e1f4677c_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 --mojo-platform-channel-handle=4136 --field-trial-handle=3192,i,2785050981002401924,4037047756083432660,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/404-18-0x0000000000510000-0x0000000000516000-memory.dmp
memory/404-24-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/404-26-0x0000000000500000-0x0000000000510000-memory.dmp
memory/5016-0-0x0000000000500000-0x0000000000510000-memory.dmp
memory/5016-1-0x0000000000660000-0x0000000000666000-memory.dmp
memory/5016-2-0x0000000000660000-0x0000000000666000-memory.dmp
memory/5016-3-0x00000000007D0000-0x00000000007D6000-memory.dmp
memory/5016-25-0x0000000000500000-0x0000000000510000-memory.dmp