Analysis
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max time kernel
150s -
max time network
153s -
platform
windows7_x64 -
resource
win7-20241023-en -
resource tags
arch:x64arch:x86image:win7-20241023-enlocale:en-usos:windows7-x64system -
submitted
31-10-2024 08:26
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe
Resource
win7-20241023-en
Behavioral task
behavioral2
Sample
2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe
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Size
37KB
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MD5
5dea77fa216caf20da8d5d2b25ac6439
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SHA1
2cceb9eefdf032c45f0a049798ec93f6f22d597a
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SHA256
c32f66a6228053c78924bf26e9d656108600aefd7cd27bce259611cfda5fcce6
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SHA512
98bef4d4452ace7b1658bdc7f3254fe32ea7d9892d2e804166abd119725121372d5f1a0c9687eed4b9c34504bd5b7b9bbf0cc746ea7ebf8575ac3371fe8ff5f4
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SSDEEP
768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGp/YIm7wm0Ug:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XD
Malware Config
Signatures
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Executes dropped EXE 1 IoCs
pid Process 1428 hurok.exe -
Loads dropped DLL 1 IoCs
pid Process 2144 2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.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_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of UnmapMainImage 2 IoCs
pid Process 2144 2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe 1428 hurok.exe -
Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 2144 wrote to memory of 1428 2144 2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe 30 PID 2144 wrote to memory of 1428 2144 2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe 30 PID 2144 wrote to memory of 1428 2144 2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe 30 PID 2144 wrote to memory of 1428 2144 2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe 30
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_5dea77fa216caf20da8d5d2b25ac6439_cryptolocker.exe"1⤵
- Loads dropped DLL
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
- Suspicious use of WriteProcessMemory
PID:2144 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Executes dropped EXE
- System Location Discovery: System Language Discovery
- Suspicious use of UnmapMainImage
PID:1428
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
38KB
MD54bf14115f692b6d5556b3cf2fcd76c51
SHA11f5cfc68c7c976bc94e5847e0d2f5015f9ffe3fe
SHA2567dcf37ea182060c992340d798ed445cb9593c755ca01eb3bb9d0df4b4657e8a4
SHA512241f56fb14d983a8986dbb9ddf2025a327c4171464f77e5f8feeae8dd9e7065893545fa0ea26816bacf7169df2882a599903bf89884d26417cf4a050ef42ddda