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Analysis
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max time kernel
148s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
12/09/2024, 03:05
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe
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Size
43KB
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MD5
da72b791a2ca4b9135c4f4d54329513c
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SHA1
0e6577b063ffcf8a87c59f3feeeea2ad93757850
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SHA256
713c304e108557f27b20324b907676fbd8f2a04263807e26714bf314e1ed739d
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SHA512
268c334d88679d3e42a07d2fd9bcec810187701062d96af665ed2d2c19d2cb91693d5ce823c93809a0cee7d66cea7b39345a652fef51877e24865c92f01776f7
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SSDEEP
768:X6LsoEEeegiZPvEhHSG+gp/QtOOtEvwDpjBaac4HK/wSvuQTCyD/95W6:X6QFElP6n+gJQMOtEvwDpjBsYK/fbDFl
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-1-5-21-786284298-625481688-3210388970-1000\Control Panel\International\Geo\Nation 2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 2656 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 2024-09-12_da72b791a2ca4b9135c4f4d54329513c_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 4864 wrote to memory of 2656 4864 2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe 85 PID 4864 wrote to memory of 2656 4864 2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe 85 PID 4864 wrote to memory of 2656 4864 2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe 85
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-12_da72b791a2ca4b9135c4f4d54329513c_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4864 -
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:2656
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
43KB
MD5e49eb963a61b8b3d37fcc3b75a2ad24b
SHA105871341c720cc3e9216ffd3a114117bee753207
SHA256e892d013832e0452fa7b9ef477a4fde8971b175f24bd12fbee0e0bd4744b8aa6
SHA512248d59f9938a2c98fd7292e07bc8c964249d426a8095b8ef7b884958167b167523ebb7f93b53c666606338f185f681e04d9c86d29e91604932f755d59ef687bb