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Analysis
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max time kernel
149s -
max time network
137s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
17/04/2024, 21:57
Behavioral task
behavioral1
Sample
2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
Resource
win10v2004-20240412-en
General
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Target
2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe
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Size
65KB
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MD5
cafa1b722bfc9c0eadc65c74c8b257c7
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SHA1
bb398c31ef863c493ab86d598506716dc105bcfd
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SHA256
dbdc678e85a82abe7ba952b49c4762481a3131a44f2098a47021fda7657f1009
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SHA512
9b7c457f8a6da3d8275968bfa6e574c916427080223359d897c9ca0b7357e4826ccd2af1fac9e01acbb0a395912bce81a2c733748d9cf7fcf0b2f4b8d9b15455
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SSDEEP
768:zQz7yVEhs9+syJP6ntOOtEvwDpjFelaB7yBEY9Su8F5mLZ5kJ7AK2R:zj+soPSMOtEvwDpj4kpmeLmQlAlR
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b00000001224d-11.dat CryptoLocker_rule2 behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b00000001224d-11.dat CryptoLocker_set1 behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp CryptoLocker_set1 behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b00000001224d-11.dat UPX behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp UPX behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2980 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 1800 2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe -
resource yara_rule behavioral1/memory/1800-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b00000001224d-11.dat upx behavioral1/memory/1800-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2980-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1800-13-0x0000000000580000-0x0000000000590000-memory.dmp upx behavioral1/memory/2980-27-0x0000000000500000-0x0000000000510000-memory.dmp upx -
Enumerates physical storage devices 1 TTPs
Attempts to interact with connected storage/optical drive(s).
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Suspicious use of WriteProcessMemory 4 IoCs
description pid Process procid_target PID 1800 wrote to memory of 2980 1800 2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe 28 PID 1800 wrote to memory of 2980 1800 2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe 28 PID 1800 wrote to memory of 2980 1800 2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe 28 PID 1800 wrote to memory of 2980 1800 2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-04-17_cafa1b722bfc9c0eadc65c74c8b257c7_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1800 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.exe"2⤵
- Executes dropped EXE
PID:2980
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
65KB
MD5f8981b8d63e0b03988109f0678c0b87e
SHA16e1f2d025bdbe0671087f90ca8a9027025170a48
SHA256705fe0bebe159caf63a8ae6d4b4f264e87a38a04ee77cf70cbe86fb08660b5d8
SHA5120eee3246c14bce8c02d15f9d18ac372a542a9544d224739d550ba3ab4b44e38547522071fe6fd8de3fb8f45c45c2be6383a0e52756847aa5144a65cd39306f67