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Analysis
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max time kernel
149s -
max time network
152s -
platform
windows7_x64 -
resource
win7-20240221-en -
resource tags
arch:x64arch:x86image:win7-20240221-enlocale:en-usos:windows7-x64system -
submitted
15/03/2024, 06:30
Behavioral task
behavioral1
Sample
2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe
Resource
win7-20240221-en
Behavioral task
behavioral2
Sample
2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe
Resource
win10v2004-20240226-en
General
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Target
2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe
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Size
89KB
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MD5
9613263e89b0913f1b35ed283af73ff5
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SHA1
3df57cd2a022fe77e485cdd74a4071caea969133
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SHA256
d5f148a36a5a2fb0097dffe00938ba9614b2e91a3813accf7fe9466eedda4f59
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SHA512
21247b7b1812c5d9e6e1f40088b4eeabadaf9fa0ceabbd86c3ca01b575de11d6291f321c6fe550a727ffbe30261761206d3d16f5491d6b02c5248b8fd6ef700b
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SSDEEP
1536:qkmnpomddpMOtEvwDpjJGYQbN/PKwMgdPX:AnBdOOtEvwDpj6zZ
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000800000001222b-11.dat CryptoLocker_rule2 behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000800000001222b-11.dat CryptoLocker_set1 behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/files/0x000800000001222b-11.dat UPX behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp UPX behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2160 asih.exe -
Loads dropped DLL 1 IoCs
pid Process 2212 2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe -
resource yara_rule behavioral1/memory/2212-0-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2212-15-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/files/0x000800000001222b-11.dat upx behavioral1/memory/2160-17-0x0000000000500000-0x000000000050F000-memory.dmp upx behavioral1/memory/2160-27-0x0000000000500000-0x000000000050F000-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 2212 wrote to memory of 2160 2212 2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe 28 PID 2212 wrote to memory of 2160 2212 2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe 28 PID 2212 wrote to memory of 2160 2212 2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe 28 PID 2212 wrote to memory of 2160 2212 2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-03-15_9613263e89b0913f1b35ed283af73ff5_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:2212 -
C:\Users\Admin\AppData\Local\Temp\asih.exe"C:\Users\Admin\AppData\Local\Temp\asih.exe"2⤵
- Executes dropped EXE
PID:2160
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Network
MITRE ATT&CK Enterprise v15
Replay Monitor
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Downloads
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Filesize
89KB
MD5563327fa506c0c853d6d334cf7249393
SHA1b104a485798b965ba645b37ec7139110b1afa934
SHA2566496b95e622029c920e5874ae7a5d4f4c3efd7417d61900d212c9337f06140ac
SHA5123bd6f0ceb9be0903ee06564add782291e23943315b3017e4700de294fb7c535c30bf5fe777b202f5f431d52db0cfecb5a5ceeae2781bb85cf471d5f6a8552f9a