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Analysis
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max time kernel
149s -
max time network
150s -
platform
windows10-2004_x64 -
resource
win10v2004-20240508-en -
resource tags
arch:x64arch:x86image:win10v2004-20240508-enlocale:en-usos:windows10-2004-x64system -
submitted
09/05/2024, 22:32
Static task
static1
Behavioral task
behavioral1
Sample
2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe
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Size
53KB
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MD5
896d31d803ea072c3ca9cb873a9d7485
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SHA1
1e7f55a144e7b3cc3ad8151c632dd75945588887
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SHA256
ef17be5d6bab4c84fb89458df2d0ffc2fe1727da6c6e0e57e9d806a68d9377c2
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SHA512
d3198bdc7a1ff60d8ab678298b3ca0215ec74f5bb58dcce25364234c337e5a91a58e517b2e4712723b922db6f4cadab11fcf767c3bf66daa558b4ba45621e08b
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SSDEEP
1536:V6QFElP6n+gMQMOtEvwDpjeJQ7pojaklPs5:V6a+pOtEvwDpj9
Malware Config
Signatures
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Detection of CryptoLocker Variants 1 IoCs
resource yara_rule behavioral2/files/0x0005000000023276-12.dat CryptoLocker_rule2 -
Detection of Cryptolocker Samples 1 IoCs
resource yara_rule behavioral2/files/0x0005000000023276-12.dat CryptoLocker_set1 -
Checks computer location settings 2 TTPs 1 IoCs
Looks up country code configured in the registry, likely geofence.
description ioc Process Key value queried \REGISTRY\USER\S-1-5-21-3558294865-3673844354-2255444939-1000\Control Panel\International\Geo\Nation 2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe -
Executes dropped EXE 1 IoCs
pid Process 3948 asih.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 3032 wrote to memory of 3948 3032 2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe 83 PID 3032 wrote to memory of 3948 3032 2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe 83 PID 3032 wrote to memory of 3948 3032 2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe 83
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-09_896d31d803ea072c3ca9cb873a9d7485_cryptolocker.exe"1⤵
- Checks computer location settings
- Suspicious use of WriteProcessMemory
PID:3032 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:3948
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD5d584b38ee3a6c599e5bea6c346e91482
SHA1379b3f554e513a0630e6edb5abd4805f7dabef04
SHA25632e190dfd70f04eaaa0afaea97380499f6da8e65e8539a3bb7dfdd4c77f2331b
SHA512a0c044a8f598e4cf97fdf54c27d5f30d15fc4db3c629bbbc3fc02c6ef301e31b5a1fe5f660691527e98ffd36e8737c2614cff49d64325588dcb15ac646f58be1