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Analysis
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max time kernel
91s -
max time network
93s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
14/05/2024, 04:40
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe
Resource
win7-20240215-en
Behavioral task
behavioral2
Sample
2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe
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Size
30KB
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MD5
abe5a170176874c5ab7dfcc204d87a36
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SHA1
594672d8e43f0626c6a02e7d5045b81f72dd83a0
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SHA256
0e7ca921e13c5c3895f122d811be5528d8598d5cd144e18c557ad3c648dc85fc
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SHA512
619141a9b5eacea9faf09c5dd29c5cec2163869b57fc93921f7d4a87dc2784760eb51c86406703f6e557ad9765b66aac664dece03515df0a39b692e212c0b71e
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SSDEEP
768:Kf1K2exg2kBwtdgI2MyzNORQtOflIwoHNV2XBFV72BOlA7ZsBGGbNAKSjNf2K:o1KhxqwtdgI2MyzNORQtOflIwoHNV2Xo
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x000700000002328e-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-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation 2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe Key value queried \REGISTRY\USER\S-1-5-21-4124900551-4068476067-3491212533-1000\Control Panel\International\Geo\Nation hurok.exe -
Executes dropped EXE 1 IoCs
pid Process 4320 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 1668 wrote to memory of 4320 1668 2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe 82 PID 1668 wrote to memory of 4320 1668 2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe 82 PID 1668 wrote to memory of 4320 1668 2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe 82
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-14_abe5a170176874c5ab7dfcc204d87a36_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:1668 -
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:4320
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
30KB
MD5907bfbe59f244a9363486aa78d6bca43
SHA12e4852cf35c55d570141e7ef64a00e5b76d0ac1b
SHA2565b7fb5c65889746dd86a6a2418535dd2c5f7cb2d2acabc92357a62eff2c01ddb
SHA5127b0cd4b94eeee2e1590bfec9e4bbe73156a3400d7741558a7ef37355d11ab6e1c4d8e0c2b53c7299ef7ee7a15ed34cc49ee30b61d05fb3f9322cea73b50c9abe