Analysis
- max time kernel
150s - max time network
156s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
13/06/2024, 03:29
General
- Target 2024-06-13_32df3f6714de680366a79b515e447c4c_cryptolocker.exe
- Size 76KB
- Sample240613-d1xeaaweqn
- SHA256 809929e1020e3cc5cd002bf9738f490f03979d3269310f19610a7ca5d90b2f1b
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 4 IoCs
- Detection of Cryptolocker Samples 4 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
- UPX packed file 4 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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_32df3f6714de680366a79b515e447c4c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-13_32df3f6714de680366a79b515e447c4c_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=3940,i,15142778360084620907,1763097090506261076,262144 --variations-seed-version --mojo-platform-channel-handle=4360 /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/2096-0-0x0000000000500000-0x000000000050F311-memory.dmp
memory/2096-1-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/2096-2-0x00000000005E0000-0x00000000005E6000-memory.dmp
memory/2096-9-0x00000000004E0000-0x00000000004E6000-memory.dmp
memory/2096-17-0x0000000000500000-0x000000000050F311-memory.dmp
memory/4456-19-0x00000000005A0000-0x00000000005A6000-memory.dmp
memory/4456-20-0x00000000005C0000-0x00000000005C6000-memory.dmp
memory/4456-26-0x0000000000500000-0x000000000050F311-memory.dmp