Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
23/02/2024, 07:27
General
- Target 2024-02-23_1dd10e01667977bedfb3a7a75f84060e_cryptolocker.exe
- Size 40KB
- Sample240223-jakwfsdc6v
- SHA256 307ac0967f83c00171ecd4cd80fa4b6c6f58800e7b49bfd13294428d63520e0f
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 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\2024-02-23_1dd10e01667977bedfb3a7a75f84060e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_1dd10e01667977bedfb3a7a75f84060e_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
retln.exe
memory/3156-21-0x0000000000730000-0x0000000000736000-memory.dmp
memory/3920-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/3920-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/3920-2-0x0000000000400000-0x0000000000406000-memory.dmp