Analysis
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max time kernel
148s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20241007-en -
resource tags
arch:x64arch:x86image:win10v2004-20241007-enlocale:en-usos:windows10-2004-x64system -
submitted
31-10-2024 08:17
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe
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Size
40KB
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MD5
fd265d78d9883573927734e9815213e7
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SHA1
5a9d70cb3ba923e58e0560be238b2477ecf4633e
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SHA256
1d6603d98dc8c1c9c939d91f19399d5657a55967d4c3ae063e3bc0bfaa4164e4
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SHA512
96e26d76e1b026338a1d5c4c06d71d217d7263dc733e89145c5f50ae2a3ae07bde5dbcc606c4d1e641ae5fb7236b1a5b9c1be76ecb4dfd241eede9b3df348236
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaacQsdRLIk:X6QFElP6n+gJQMOtEvwDpjBsQpk
Malware Config
Signatures
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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-1-5-21-1045960512-3948844814-3059691613-1000\Control Panel\International\Geo\Nation 2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3172 asih.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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System Location Discovery: System Language Discovery 1 TTPs 2 IoCs
Attempt gather information about the system language of a victim in order to infer the geographical location of that host.
description ioc Process Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language 2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language asih.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 5064 wrote to memory of 3172 5064 2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe 85 PID 5064 wrote to memory of 3172 5064 2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe 85 PID 5064 wrote to memory of 3172 5064 2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_fd265d78d9883573927734e9815213e7_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:5064 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:3172
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
40KB
MD5fa55b89ca13ac86ae00657884301dc60
SHA18640f1bf7868966e2b2ca09c8819a1e7a6e0b77d
SHA25611a05cb24050b4e1844b06b7e187f7cc65164d66d12acb9081e0f34e92fcaf09
SHA512e02405dc277c4749e6bb0a9332d4dc60897f766269ec61a3a68fbc72bd31e6d2d7dca233510a8d8feb4988a781be7957afa524be4929f2874d32de3541ce91fa