Analysis
- max time kernel
114s - max time network
152s - platform
windows10-2004_x64 - resource
win10v2004-20240221-en - resource tags
- submitted
23/02/2024, 14:41
General
- Target 2024-02-23_0afd5e00927991d82dee519e5d0ddc6d_cryptolocker.exe
- Size 39KB
- Sample240223-r2fd2scb5z
- SHA256 714ea4808311f454d8bdfd6c013242d6e9bd18c41b02a13d1789dfb774c63e1f
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_0afd5e00927991d82dee519e5d0ddc6d_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_0afd5e00927991d82dee519e5d0ddc6d_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/4644-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/4644-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/4644-2-0x0000000000400000-0x0000000000406000-memory.dmp
memory/4912-20-0x0000000002110000-0x0000000002116000-memory.dmp