Analysis
- max time kernel
148s - max time network
150s - platform
windows10-2004_x64 - resource
win10v2004-20240426-en - resource tags
- submitted
29/04/2024, 16:18
General
- Target 2024-04-29_d4dfbffda31bda9fc9f761aca529c944_cryptolocker.exe
- Size 32KB
- Sample240429-tsbqlsfc5y
- SHA256 b67abc10cea57e48955d259bd1d85022162b9255eb04fc91497075250585fe53
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\2024-04-29_d4dfbffda31bda9fc9f761aca529c944_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-29_d4dfbffda31bda9fc9f761aca529c944_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/2276-25-0x0000000002120000-0x0000000002126000-memory.dmp
memory/2780-0-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/2780-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2780-8-0x0000000002D60000-0x0000000002D66000-memory.dmp