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Analysis
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max time kernel
148s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
14/06/2024, 07:43
Behavioral task
behavioral1
Sample
2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe
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Size
53KB
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MD5
722f7b8cc6b978544093bd94c61e5525
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SHA1
6ef9f15838bdb69b524e7c6f384a188690479585
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SHA256
8b44a05628b2e7a69b924f5990bb63488db0f14ca6ca6a94eddaa0cc38101729
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SHA512
c66bef43835d5d5680f97081043893690871d381304c48bd331e9714203f6efebf7223ad1761cccc0b54c91bd1fe5696d9581d0ad62cae83023c74d1377c8a21
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SSDEEP
768:z6LsoEEeegiZPvEhHSG+gzum/kLyMro2GtOOtEvwDpj/YY1J+OTOmb:z6QFElP6n+gKmddpMOtEvwDpj31imb
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x0009000000014539-11.dat CryptoLocker_rule2 behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x0009000000014539-11.dat CryptoLocker_set1 behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x0009000000014539-11.dat UPX behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2680 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1936 2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe -
resource yara_rule behavioral1/memory/1936-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x0009000000014539-11.dat upx behavioral1/memory/2680-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1936-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2680-26-0x0000000000500000-0x0000000000510000-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 1936 wrote to memory of 2680 1936 2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe 28 PID 1936 wrote to memory of 2680 1936 2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe 28 PID 1936 wrote to memory of 2680 1936 2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe 28 PID 1936 wrote to memory of 2680 1936 2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-14_722f7b8cc6b978544093bd94c61e5525_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1936 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2680
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
53KB
MD59d581fc7b50055cc6e475316c42e8c74
SHA1c4538f4400031651f6e9593e723fd8ebc1503101
SHA2563c58b4a31941112d1bd0aa421bc292ae8cf180073295ed4150b42cc7a4c34a6f
SHA5124b1c0ba4d7136a72b1ed4f5bb68d0187172dfd9265f2791979eea5cc3cde0e7f4e43af083311a1d49d864e9d7e59a01b619f547d4621efdb9b0b8aca2131e402