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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
06/10/2024, 01:41
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe
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Size
46KB
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MD5
1b7186aa72affcef37a5a7862fee5e0b
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SHA1
fca945c5203787baaf0775d65c42c5d52b4940a9
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SHA256
dd34cd5bdacbb0065195fe43a0dd31f7b240b1af447f2d9509371ebadaa2d0af
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SHA512
951ef4462ed62348038c33975e0c221d735063e1efb185fbbdde3c376fe6e09a7052fcc0b3336fed9258f3c5204a3d67e0cfe67ea3d2c35f395b7e2312859256
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SSDEEP
768:bao/2n1TCraU6GD1a4X1XOQ69zbjlAAX5e9zM:bF/y2lFizbR9XwzM
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-1-5-21-355097885-2402257403-2971294179-1000\Control Panel\International\Geo\Nation 2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 1648 rewok.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 2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language rewok.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 1680 wrote to memory of 1648 1680 2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe 82 PID 1680 wrote to memory of 1648 1680 2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe 82 PID 1680 wrote to memory of 1648 1680 2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-06_1b7186aa72affcef37a5a7862fee5e0b_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\Temp\rewok.exe"C:\Users\Admin\AppData\Local\Temp\rewok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1648
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
46KB
MD5a54d0120ab0170bfb366669729a85d00
SHA1cf18e8010741ca558c34be97a21572b93a5d3542
SHA256228843da2cb7030b0110504fafea2d91c3b454353b4876d63e3d8b950e158199
SHA5126cf58e76584443c78a231132046110b19250d3fb77606aa492a773075f6524812596aeaefa43a656b72f59bb88e95fa648abd3d708f00715f4875a1c1cec5bf2