Analysis
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max time kernel
93s -
max time network
123s -
platform
windows10-2004_x64 -
resource
win10v2004-20240802-en -
resource tags
arch:x64arch:x86image:win10v2004-20240802-enlocale:en-usos:windows10-2004-x64system -
submitted
09-09-2024 03:30
Static task
static1
Behavioral task
behavioral1
Sample
2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe
Resource
win7-20240708-en
Behavioral task
behavioral2
Sample
2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe
Resource
win10v2004-20240802-en
General
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Target
2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe
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Size
49KB
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MD5
796def891cbafe2b214fa38baa71d6d9
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SHA1
009ede5877492ce41a32ec6048e3ba51dea40a54
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SHA256
9e50f0f271bd55a7685aac59e4073eee8731bd630235f2ae15f107e0d07d5277
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SHA512
9e2dfea5de066111afad53b41ae71e2bee9d2c7387cb632c9b46ab9ea2bbb3d2d2a630010b52d05b852c16c43085b33c38e690528a1a4aa916391dbf0ce00706
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1x5hjatre:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7+
Malware Config
Signatures
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Checks computer location settings 2 TTPs 2 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation 2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-945322488-2060912225-3527527000-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 1872 hurok.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 2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe Key opened \REGISTRY\MACHINE\SYSTEM\ControlSet001\Control\NLS\Language hurok.exe -
Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 3192 wrote to memory of 1872 3192 2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe 86 PID 3192 wrote to memory of 1872 3192 2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe 86 PID 3192 wrote to memory of 1872 3192 2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe 86
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-09-09_796def891cbafe2b214fa38baa71d6d9_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:3192 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
- System Location Discovery: System Language Discovery
PID:1872
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
49KB
MD562953e7853e91e46146b4b424bc41425
SHA1b2bcc9ea2954bb9a8d66ff35858211e16197d906
SHA2563e51b80f7b6c7bfc86198a6625932b4c98b1ea7ab98d320803263ead23608335
SHA512884554c06ff4f7cdfe89278640367f378811c47ffa0ebc6f6de6e50e6f41ad40af68abc85ebdcfe3b06e10094a9835d59b407323ae93ae4c038e5b58f29e7e0f