Analysis
- max time kernel
148s - max time network
151s - platform
windows10-2004_x64 - resource
win10v2004-20231215-en - resource tags
- submitted
14/02/2024, 02:14
General
- Target 2024-02-14_d78f1979625002443da763ff0788fea1_cryptolocker.exe
- Size 93KB
- Sample240214-cnywxaff63
- SHA256 83f3a8cb0a01b363a0f945abc9230c966b7c1c1f4927ed995e4b9092a9bdf5cf
Malware Config
Signatures
- Detection of CryptoLocker Variants 5 IoCs
- Detection of Cryptolocker Samples 5 IoCs
- UPX dump on OEP (original entry point) 5 IoCs
- Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
- Executes dropped EXE 1 IoCs
- UPX packed file 5 IoCs
Detects executables packed with UPX/modified UPX open source packer.
- 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\2024-02-14_d78f1979625002443da763ff0788fea1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-02-14_d78f1979625002443da763ff0788fea1_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
-
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
-
Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
asih.exe
memory/2300-0-0x0000000000500000-0x000000000050F000-memory.dmp
memory/2300-1-0x0000000002150000-0x0000000002156000-memory.dmp
memory/2300-2-0x0000000002150000-0x0000000002156000-memory.dmp
memory/2300-3-0x0000000002040000-0x0000000002046000-memory.dmp
memory/2300-18-0x0000000000500000-0x000000000050F000-memory.dmp
memory/4128-17-0x0000000000500000-0x000000000050F000-memory.dmp
memory/4128-20-0x00000000006E0000-0x00000000006E6000-memory.dmp
memory/4128-21-0x00000000006C0000-0x00000000006C6000-memory.dmp
memory/4128-27-0x0000000000500000-0x000000000050F000-memory.dmp