Analysis
- max time kernel
120s - max time network
121s - platform
windows7_x64 - resource
win7-20240221-en - resource tags
- submitted
23/02/2024, 12:24
General
- Target 2024-02-23_039639897dfa9ce009814a85e3bea278_cryptolocker.exe
- Size 34KB
- Sample240223-plfc1aff3s
- SHA256 4bde26866a1ac68a478218301e9f70eabaebe88788906c1d8a528059eb1f3ca3
Score
9/10
Malware Config
Signatures
- Detection of CryptoLocker Variants 1 IoCs
- Executes dropped EXE 1 IoCs
- Loads dropped DLL 1 IoCs
- Creates a large amount of network flows 1 TTPs
This may indicate a network scan to discover remotely running services.
- Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
- Suspicious use of UnmapMainImage 2 IoCs
- Suspicious use of WriteProcessMemory 4 IoCs
Processes
-
C:\Users\Admin\AppData\Local\Temp\2024-02-23_039639897dfa9ce009814a85e3bea278_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-23_039639897dfa9ce009814a85e3bea278_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\retln.exe"C:\Users\Admin\AppData\Local\Temp\retln.exe"2⤵
- Executes dropped EXE
- Suspicious use of UnmapMainImage
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
retln.exe
memory/2220-0-0x0000000000280000-0x0000000000286000-memory.dmp
memory/2220-1-0x0000000000400000-0x0000000000406000-memory.dmp
memory/2220-8-0x0000000000280000-0x0000000000286000-memory.dmp
memory/3032-19-0x00000000003C0000-0x00000000003C6000-memory.dmp