Analysis
- max time kernel
150s - max time network
149s - platform
windows10-2004_x64 - resource
win10v2004-20231222-en - resource tags
- submitted
27/01/2024, 17:08
General
- Target 2024-01-27_b814b2da57db90aca5db863f4d902b8d_cryptolocker.exe
- Size 50KB
- Sample240127-vnn1tagda3
- SHA256 8acf2a2f63960d4f4249fb40d4c04c11261dcdedac9797012a2849d7be04248e
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\2024-01-27_b814b2da57db90aca5db863f4d902b8d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-27_b814b2da57db90aca5db863f4d902b8d_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\lossy.exe"C:\Users\Admin\AppData\Local\Temp\lossy.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
lossy.exe
memory/444-17-0x0000000002060000-0x0000000002066000-memory.dmp
memory/444-19-0x0000000002040000-0x0000000002046000-memory.dmp
memory/4112-0-0x0000000002300000-0x0000000002306000-memory.dmp
memory/4112-2-0x0000000002220000-0x0000000002226000-memory.dmp
memory/4112-1-0x0000000002300000-0x0000000002306000-memory.dmp