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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
03/05/2024, 21:23
Behavioral task
behavioral1
Sample
2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe
Resource
win7-20240220-en
Behavioral task
behavioral2
Sample
2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe
Resource
win10v2004-20240426-en
General
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Target
2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe
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Size
74KB
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MD5
8ccc302902f66f163af206baae709628
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SHA1
4ca4de9c0d893f4734fc4d7959ee12713a0c3fb1
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SHA256
6c7a0b370c4356488b97dc5e242b4153b9820d5bf20dd11d9dbb0f7f38da201b
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SHA512
bf6a417b04bd8ea75e95cb95f14df22feb329354f2d66a2c8a7637699fa1f0317fef59ddab9717c13f73afa4d45612fff61d6a412a8b821c6ec63ac58187cf18
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SSDEEP
1536:P8mnK6QFElP6n+gymddpMOtEvwDpjIHsalVr5:1nK6a+qdOOtEvwDpjC
Malware Config
Signatures
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Detection of CryptoLocker Variants 6 IoCs
resource yara_rule behavioral1/memory/2496-1-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000c00000001225d-11.dat CryptoLocker_rule2 behavioral1/memory/2496-13-0x0000000001F20000-0x0000000001F30000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2976-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2496-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 6 IoCs
resource yara_rule behavioral1/memory/2496-1-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/files/0x000c00000001225d-11.dat CryptoLocker_set1 behavioral1/memory/2496-13-0x0000000001F20000-0x0000000001F30000-memory.dmp CryptoLocker_set1 behavioral1/memory/2976-17-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2496-16-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F311-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 6 IoCs
resource yara_rule behavioral1/memory/2496-1-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/files/0x000c00000001225d-11.dat UPX behavioral1/memory/2496-13-0x0000000001F20000-0x0000000001F30000-memory.dmp UPX behavioral1/memory/2976-17-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2496-16-0x0000000000500000-0x000000000050F311-memory.dmp UPX behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F311-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2976 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2496 2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe -
resource yara_rule behavioral1/memory/2496-1-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/files/0x000c00000001225d-11.dat upx behavioral1/memory/2496-13-0x0000000001F20000-0x0000000001F30000-memory.dmp upx behavioral1/memory/2976-17-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2496-16-0x0000000000500000-0x000000000050F311-memory.dmp upx behavioral1/memory/2976-27-0x0000000000500000-0x000000000050F311-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 2496 wrote to memory of 2976 2496 2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe 28 PID 2496 wrote to memory of 2976 2496 2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe 28 PID 2496 wrote to memory of 2976 2496 2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe 28 PID 2496 wrote to memory of 2976 2496 2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-03_8ccc302902f66f163af206baae709628_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2496 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2976
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
74KB
MD5164ab32656c998dfdccd08bb8cdc98ba
SHA1d50a496b5d213ba57e78fbd29834f5d79494f6fe
SHA25651b546728c67f8a4cc910dc9711b813d6f82d6d25052b862d18807ac4284a4d8
SHA5124c6716272455e445bde55183f215638d6961b2a8905b7dfd0d5f84b5dcb9d5832181423063997e72e0e7294dd6839d712a8602ecbf4235ce5f150c101333db78