Analysis
- max time kernel
150s - max time network
146s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
25/01/2024, 15:36
General
- Target 2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe
- Size 31KB
- Sample240125-s2d2naagen
- SHA256 b926658227ec1a05d3f20bee63cfa53b71238913baa5ed266a704e7f6f2826c9
Score
10/10
Malware Config
Signatures
- Kinsing
Kinsing is a loader written in Golang.
- 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\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-01-25_6f403dddf26e8e95554e0b18e3d6a0cc_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/1816-25-0x0000000002D60000-0x0000000002D66000-memory.dmp
memory/2328-0-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/2328-1-0x0000000002EA0000-0x0000000002EA6000-memory.dmp
memory/2328-2-0x0000000000400000-0x0000000000406000-memory.dmp