Analysis
- max time kernel
145s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
03/06/2024, 23:29
General
- Target 2024-06-03_d8e34cc7459e7540f96ea96e5efc8d58_cryptolocker.exe
- Size 43KB
- Sample240603-3gl7msdh46
- SHA256 dc407418833286faaf5bc35478b39e5798cb4fd0121ad13cde446e57d96d3ce2
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\2024-06-03_d8e34cc7459e7540f96ea96e5efc8d58_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-03_d8e34cc7459e7540f96ea96e5efc8d58_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
Loading Replay Monitor...
Downloads
retln.exe
memory/1288-0-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/1288-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/1288-8-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/3700-25-0x0000000002EA0000-0x0000000002EA6000-memory.dmp