Analysis
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max time kernel
149s -
max time network
152s -
platform
windows10-2004_x64 -
resource
win10v2004-20240426-en -
resource tags
arch:x64arch:x86image:win10v2004-20240426-enlocale:en-usos:windows10-2004-x64system -
submitted
01/06/2024, 20:07
Static task
static1
Behavioral task
behavioral1
Sample
2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe
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Size
54KB
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MD5
89c54fa571ecb947b8467172770711ea
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SHA1
ab1a197d0ae0e0ade7a1536f962795bc1b011a91
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SHA256
14a0a102689c1893cb28d471edb8d023e1e58aa11fdd320fb494e8c13fa6234e
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SHA512
602a9bc97d65795227d2e7706e721625eb3fb4c861143ec3bd9d43b8496dbea64cf44b9948b019ed4e63b27f835fc86fba1932a15d92c8b7767cc3127d45873f
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SSDEEP
1536:o1KhxqwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZszsbKY1xzpAIX6EY:aq7tdgI2MyzNORQtOflIwoHNV2XBFV7x
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023298-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0007000000023298-12.dat CryptoLocker_set1 -
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-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation 2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-1162180587-977231257-2194346871-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 4052 hurok.exe -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 3 IoCs
description pid Process procid_target PID 4968 wrote to memory of 4052 4968 2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe 83 PID 4968 wrote to memory of 4052 4968 2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe 83 PID 4968 wrote to memory of 4052 4968 2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-01_89c54fa571ecb947b8467172770711ea_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:4968 -
C:\Users\Admin\AppData\Local\Temp\hurok.exe"C:\Users\Admin\AppData\Local\Temp\hurok.exe"2⤵
- Checks computer location settings
- Executes dropped EXE
PID:4052
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
54KB
MD534e2293ef12943b559b723aa0fa19d77
SHA1c39a59b2ccbbd1655e9db063f37967ad57cae554
SHA256f2f60217bc371986a84449af00b142a4bd55d0605912183c1c1a63116a0a0948
SHA51218d69b5be029a90a613d2dcdcd52ba57ea664fc3e816022633ff5949f4a8b4bce14905fcc729296e7e114951f0d6f354a927e87dbf8d719d55c05f96e673c55c