Analysis
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max time kernel
149s -
max time network
149s -
platform
windows7_x64 -
resource
win7-20231129-en -
resource tags
arch:x64arch:x86image:win7-20231129-enlocale:en-usos:windows7-x64system -
submitted
05-05-2024 04:24
Behavioral task
behavioral1
Sample
2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe
Resource
win7-20231129-en
Behavioral task
behavioral2
Sample
2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe
Resource
win10v2004-20240419-en
General
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Target
2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe
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Size
93KB
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MD5
1b4c83b17c514c124f9fa2d3a1bd15f1
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SHA1
d8c0b2ef70acbbb90dc47190be426352f2ad7e95
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SHA256
5d928707bfab628841cfff46052d1151121339dc556d2ca1a2c6c89575c2da05
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SHA512
f7ff385926681e9db4184b17545f65f6f589a95713eab001f83a99f4b9941c8407ce50e510fc9e508741ff364adc285d6b16331a6e336850f6c628725e3353b7
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SSDEEP
1536:zj+soPSMOtEvwDpj4ktBl01hJl8QAPM8Ho6cRDjgx/d:zCsanOtEvwDpjBd
Malware Config
Signatures
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Detection of CryptoLocker Variants 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/files/0x000b000000015d0f-11.dat CryptoLocker_rule2 behavioral1/memory/2192-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 behavioral1/memory/2192-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_rule2 -
Detection of Cryptolocker Samples 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/files/0x000b000000015d0f-11.dat CryptoLocker_set1 behavioral1/memory/2192-16-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 behavioral1/memory/2192-26-0x0000000000500000-0x0000000000510000-memory.dmp CryptoLocker_set1 -
UPX dump on OEP (original entry point) 5 IoCs
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/files/0x000b000000015d0f-11.dat UPX behavioral1/memory/2192-16-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp UPX behavioral1/memory/2192-26-0x0000000000500000-0x0000000000510000-memory.dmp UPX -
Executes dropped EXE 1 IoCs
pid Process 2192 misid.exe -
Loads dropped DLL 1 IoCs
pid Process 1680 2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe -
resource yara_rule behavioral1/memory/1680-0-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/files/0x000b000000015d0f-11.dat upx behavioral1/memory/2192-16-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/1680-15-0x0000000000500000-0x0000000000510000-memory.dmp upx behavioral1/memory/2192-26-0x0000000000500000-0x0000000000510000-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 1680 wrote to memory of 2192 1680 2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe 28 PID 1680 wrote to memory of 2192 1680 2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe 28 PID 1680 wrote to memory of 2192 1680 2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe 28 PID 1680 wrote to memory of 2192 1680 2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe 28
Processes
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C:\Users\Admin\AppData\Local\Temp\2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe"C:\Users\Admin\AppData\Local\Temp\2024-05-05_1b4c83b17c514c124f9fa2d3a1bd15f1_cryptolocker.exe"1⤵
- Loads dropped DLL
- Suspicious use of WriteProcessMemory
PID:1680 -
C:\Users\Admin\AppData\Local\Temp\misid.exe"C:\Users\Admin\AppData\Local\Temp\misid.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
93KB
MD5988945e86bb60487dd3ca4a53a950959
SHA1876841e76a5fb43b408d4cc7a92d30d21b73fe65
SHA2565192d5c62d867dabb7ce12ff5423ad7d3b8cc22f412f7910f1e3d98e922c00ec
SHA5121472be938d309b40e8c692524d71a840d3dd611fd792accfa4c13e07a4c3d44071783dcc201979ae9fc3a46943d3c9a6cd855e80a3e54140afdb58d59501439c