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Analysis
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max time kernel
148s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20240220-en -
resource tags
arch:x64arch:x86image:win7-20240220-enlocale:en-usos:windows7-x64system -
submitted
16/06/2024, 14:32
Behavioral task
behavioral1
Sample
2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe
Resource
win10v2004-20240508-en
General
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Target
2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe
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Size
41KB
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MD5
8d092c6c9946b687db09ec894813eed3
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SHA1
ebeeaa4e4216535d7ab9cf06f238824057f6bf02
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SHA256
8f7e8810121b11948c5a2ec578907c78329aa95a7967bdf43604e283522bc4a7
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SHA512
d7fa1688f32d977f93cf0ac033afffb918d2b3d68c379714277004388dccb7aaec64e1f41c922466805fb37d958c94561ac8522f44fb8cee5bab07026967aaad
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SSDEEP
768:q7PdFecFS5agQtOOtEvwDpjeMLZdzuqpXsiE8Wq/DpkITYL:qDdFJy3QMOtEvwDpjjWMl7TS
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2908-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000a000000014f57-11.dat CryptoLocker_rule2 behavioral1/memory/2908-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2500-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2500-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2908-1-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000a000000014f57-11.dat CryptoLocker_set1 behavioral1/memory/2908-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2500-17-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2500-27-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2908-1-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000a000000014f57-11.dat UPX behavioral1/memory/2908-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2500-17-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2500-27-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2500 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2908 2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe -
resource yara_rule behavioral1/memory/2908-1-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000a000000014f57-11.dat upx behavioral1/memory/2908-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2500-17-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2500-27-0x0000000000500000-0x0000000000510000-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 2908 wrote to memory of 2500 2908 2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe 28 PID 2908 wrote to memory of 2500 2908 2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe 28 PID 2908 wrote to memory of 2500 2908 2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe 28 PID 2908 wrote to memory of 2500 2908 2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-16_8d092c6c9946b687db09ec894813eed3_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2908 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2500
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
41KB
MD5f2d6ee42635d8741c99e8a1f5e7d62bb
SHA1d398bf6d917e8588ac68b0d8a9815a38018da1b8
SHA256dd53f991ce3c32f2cdfe6cdd3dcb97d0d637858e927ce07913023b51df091c84
SHA512516cd531d74a3c5a818a6b88111be2368c468606b27cf0692879d906fe00c8acb7805b4f89a7729406b09fea89f2309e97f2fc243d9951ff53302b0e6cd49ad5