Analysis
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max time kernel
148s -
max time network
156s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
01/06/2024, 18:25
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe
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Size
45KB
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MD5
420d54ff31a7ef2e05ff4e0b643173db
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SHA1
64af9500e89f5313145734612c8af0202dd4f51d
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SHA256
35d9637bd9b44fcaedc53e7f72f1289741bd266e04c0c29b95aa389a05cfaa5f
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SHA512
b2be81a02c58320bd274888b9ac5a47a5bdf3f191582b9aa8d0980b3d918434553dd79814d316bf5373ba040c417b678ed32fe4f868bd00a9be7294af1cc8adc
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SSDEEP
768:b7o/2n1TCraU6GD1a4X0WcO+wMVm+slAMphq6:bc/y2lkF0+Beq6
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-12.dat CryptoLocker_rule2 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 4956 rewok.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 2788 wrote to memory of 4956 2788 2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe 82 PID 2788 wrote to memory of 4956 2788 2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe 82 PID 2788 wrote to memory of 4956 2788 2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-01_420d54ff31a7ef2e05ff4e0b643173db_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:2788 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
PID:4956
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD50130fa94f4534cb6aba36f627d655c17
SHA13a5bedff9d2a34118bd4fe6b33ca3c6bc7be1f58
SHA2566d4e0e7b1ca6d5c6c4ded617d32552680d44ea5b87917a530956a763615883b2
SHA51207cac0e3aec5e95f00490a55ca0222e14f05c0ed47f300d213fead920918c8f40342eee547d2be6f0973f80c4c3b0351b844ea96539e6bea0b72ac3c5aaee91e