Analysis
- max time kernel
150s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20240508-en - resource tags
- submitted
10/06/2024, 04:39
General
- Target 2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe
- Size 39KB
- Sample240610-e91czach22
- SHA256 7a46913b08a642afb020f454221cc373ec69e2d01bf0277f4741a785b3f7748f
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\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-10_19c3eb939ebe5587e12f5429b99fd4b8_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/3920-25-0x0000000000600000-0x0000000000606000-memory.dmp
memory/4808-0-0x00000000020E0000-0x00000000020E6000-memory.dmp
memory/4808-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4808-8-0x00000000020E0000-0x00000000020E6000-memory.dmp