Analysis
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max time kernel
147s -
max time network
148s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
11/06/2024, 01:06
Behavioral task
behavioral1
Sample
2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe
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Size
70KB
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MD5
0fc0471ec66c3227f04d670050b6ac6e
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SHA1
dd7f60e47aa081d1da5d0acebfc6ba1e9a833118
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SHA256
b9bb395500b1f57c3027578bb82c3c1c4694da9cc16ccfc6bcad234e1bd5fbce
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SHA512
09023146ac920b91f46c80515409e80e6ecaef084e9216ddb298ef60badfab6d7e0c675cd1bf5744e167bf4c1cf6f10fd18b6f6bbf322a21c645de7fde7dc8cc
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SSDEEP
768:quVbxjgQNQXtckstOOtEvwDpjAaDOK6PsED3VK2+ZtyOjgO4r9vFAg2rq6W1A1Pu:quJu9cvMOtEvwDpjWYTjipvF2bx1PQAu
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000015d0f-11.dat CryptoLocker_rule2 behavioral1/memory/1680-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2192-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2192-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000015d0f-11.dat CryptoLocker_set1 behavioral1/memory/1680-16-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2192-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2192-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000b000000015d0f-11.dat UPX behavioral1/memory/1680-16-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2192-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2192-27-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2192 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 1680 2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe -
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000b000000015d0f-11.dat upx behavioral1/memory/1680-16-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2192-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2192-27-0x0000000000500000-0x000000000050F000-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 1680 wrote to memory of 2192 1680 2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe 28 PID 1680 wrote to memory of 2192 1680 2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe 28 PID 1680 wrote to memory of 2192 1680 2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe 28 PID 1680 wrote to memory of 2192 1680 2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-06-11_0fc0471ec66c3227f04d670050b6ac6e_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2192
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
70KB
MD5d5e669737752be2ce6608436dfa07015
SHA147e5ba8b03b0ae1cf5322ff545574f6bdc674646
SHA2569265225773454765e62fdb2a133120726fd5af510133319e306ba80f0c052ca2
SHA5122c926e303ab9ca62f32b6d11484c902b4f93f0ae17d54250f56dd6b327ad069e38044f52992544556205f92b098de3400d317bc5a8eda81e42f01768dc6fcf5a