Analysis
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max time kernel
148s -
max time network
153s -
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 08:22
Static task
static1
Behavioral task
behavioral1
Sample
2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe
Resource
win7-20240903-en
Behavioral task
behavioral2
Sample
2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe
Resource
win10v2004-20241007-en
General
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Target
2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe
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Size
58KB
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MD5
085d25f1a229366f1908db53d7f97279
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SHA1
904954517d164f3edd8be898dfa5d6f7b8db5480
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SHA256
79619733870aa86927a6089314d1ef72faba1927b536add2029ce8d26344797f
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SHA512
1f29a934fa5286e366f5cf1ab86d672d4fddbef3a7f58924add64364a73d98b2be8e5e1400780fd24c7c2962d87d900706011bee757a15a56b984c1965cb3b7c
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzp0oj6701:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7I
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-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation 2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4089630652-1596403869-279772308-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 4584 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 2024-10-31_085d25f1a229366f1908db53d7f97279_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 4388 wrote to memory of 4584 4388 2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe 83 PID 4388 wrote to memory of 4584 4388 2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe 83 PID 4388 wrote to memory of 4584 4388 2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-10-31_085d25f1a229366f1908db53d7f97279_cryptolocker.exe"1⤵
- Checks computer location settings
- System Location Discovery: System Language Discovery
- Suspicious use of WriteProcessMemory
PID:4388 -
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:4584
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
58KB
MD57782d3d0f105d1af4fb8dd59913447a2
SHA1e743bd10a17b39acb45d27c189c5e1f62226f94d
SHA2561bc306a8abcf44e69c5782801956c87181c8ea9bed572e27d9697948e5541ede
SHA5121be1aba5cd00d30977be6fbc85c35bfdfd76509ed385141647f0a66e8fe1be4382183e13945db8c1210a282ddd1229f0b0b98d290dd75d9ff31df38a456a02a2