Analysis
- max time kernel
150s - max time network
153s - platform
windows10-2004_x64 - resource
win10v2004-20240226-en - resource tags
- submitted
03/06/2024, 10:37
General
- Target 2024-06-03_ba2e782b8801fda49829b5f193889754_cryptolocker.exe
- Size 96KB
- Sample240603-mpa7cabe9x
- SHA256 7404efe2e88ae8fe3741ff4895644767abb89afa2ca0bd14f96644a54a2a620e
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\2024-06-03_ba2e782b8801fda49829b5f193889754_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_ba2e782b8801fda49829b5f193889754_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=1408 --field-trial-handle=2280,i,4114443225282860369,4764091921472631035,262144 --variations-seed-version /prefetch:81⤵
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/4280-18-0x00000000004D0000-0x00000000004D6000-memory.dmp
memory/4280-19-0x00000000004F0000-0x00000000004F6000-memory.dmp
memory/4280-26-0x0000000000500000-0x000000000050F000-memory.dmp
memory/4656-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/4656-1-0x0000000000530000-0x0000000000536000-memory.dmp
memory/4656-2-0x0000000000530000-0x0000000000536000-memory.dmp
memory/4656-3-0x00000000020F0000-0x00000000020F6000-memory.dmp
memory/4656-25-0x0000000000500000-0x000000000050F000-memory.dmp